1
==================================
2
Reading and Writing Config Files
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==================================
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----------------------------------------
6
ConfigObj 4 Introduction and Reference
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----------------------------------------
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:Authors: Michael Foord, Nicola Larosa
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:Version: ConfigObj 4.5.2
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:Homepage: `ConfigObj Homepage`_
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:Sourceforge: Sourceforge_
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:Development: `SVN Repository`_
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:License: `BSD License`_
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:Support: `Mailing List`_
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.. _Mailing List: http://lists.sourceforge.net/lists/listinfo/configobj-develop
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.. _SVN Repository: http://svn.pythonutils.python-hosting.com
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:description: ConfigObj - a Python module for easy reading and writing of
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:keywords: python, script, module, config, configuration, data, persistence,
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developer, configparser
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.. contents:: ConfigObj Manual
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**ConfigObj** is a simple but powerful config file reader and writer: an *ini
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file round tripper*. Its main feature is that it is very easy to use, with a
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straightforward programmer's interface and a simple syntax for config files.
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It has lots of other features though :
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* Nested sections (subsections), to any level
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* Multiple line values
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* String interpolation (substitution)
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* Integrated with a powerful validation system
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- including automatic type checking/conversion
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- and allowing default values
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* When writing out config files, ConfigObj preserves all comments and the order of members and sections
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* Many useful methods and options for working with configuration files (like the 'reload' method)
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* Full Unicode support
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For support and bug reports please use the ConfigObj `Mailing List`_.
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The current version is **4.5.2**, dated 24th February 2008. ConfigObj 4 is
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now stable. We still expect to pick up a few bugs along the way though [#]_.
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You can get ConfigObj in the following ways :
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* configobj.py_ from Voidspace
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ConfigObj has no external dependencies. This file is sufficient to access
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all the functionality except Validation_.
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* configobj.zip_ from Voidspace
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This also contains validate.py_ and `this document`_.
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* The latest development version can be obtained from the `Subversion
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* validate.py_ from Voidspace
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* You can also download *configobj.zip* from Sourceforge_
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*configobj.zip* also contains `this document`_.
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* You can view `this document`_ online at the `ConfigObj Homepage`_.
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ConfigObj is also part of the Pythonutils_ set of modules. This contains
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various other useful modules, and is required by many of the `Voidspace Python
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It is sometimes possible to get the latest *development version* of ConfigObj
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from the `Subversion Repository <http://svn.pythonutils.python-hosting.com/trunk/pythonutils/>`_.
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.. _configobj.py: http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=configobj.py
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.. _configobj.zip: http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=configobj-4.5.2.zip
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.. _validate.py: http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=validate.py
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.. _configobj homepage: http://www.voidspace.org.uk/python/configobj.html
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.. _Sourceforge: http://sourceforge.net/projects/configobj
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.. _pythonutils: http://www.voidspace.org.uk/python/pythonutils.html
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.. _Voidspace Python Projects: http://www.voidspace.org.uk/python/index.shtml
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ConfigObj in the Real World
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===========================
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**ConfigObj** is widely used. Projects using it include:
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* `Bazaar <http://bazaar-ng.org>`_.
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Bazaar is a Python distributed {acro;VCS;Version Control System}.
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ConfigObj is used to read ``bazaar.conf`` and ``branches.conf``.
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* `Turbogears <http://www.turbogears.org/>`_
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Turbogears is a web application framework.
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* `Chandler <http://chandler.osafoundation.org/>`_
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A Python and `wxPython <http://www.wxpython.org>`_
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{acro;PIM;Personal Information Manager}, being developed by the
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`OSAFoundation <http://www.osafoundation.org/>`_.
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* `matplotlib <http://matplotlib.sourceforge.net/>`_
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A 2D plotting library.
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* `IPython <http://ipython.scipy.org/moin/>`_
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IPython is an enhanced interactive Python shell. IPython uses ConfigObj in a module called 'TConfig' that combines it with enthought `Traits <http://code.enthought.com/traits/>`_: `tconfig <http://ipython.scipy.org/ipython/ipython/browser/ipython/branches/saw/sandbox/tconfig>`_.
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* `Elisa - the Fluendo Mediacenter <http://elisa.fluendo.com/>`_
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Elisa is an open source cross-platform media center solution designed to be simple for people not particularly familiar with computers.
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The outstanding feature of using ConfigObj is simplicity. Most functions can be
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performed with single line commands.
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Reading a Config File
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---------------------
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The normal way to read a config file, is to give ConfigObj the filename :
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from configobj import ConfigObj
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config = ConfigObj(filename)
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You can also pass the config file in as a list of lines, or a ``StringIO``
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instance, so it doesn't matter where your config data comes from.
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You can then access members of your config file as a dictionary. Subsections
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will also be dictionaries.
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from configobj import ConfigObj
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config = ConfigObj(filename)
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value1 = config['keyword1']
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value2 = config['keyword2']
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section1 = config['section1']
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value3 = section1['keyword3']
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value4 = section1['keyword4']
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# you could also write
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value3 = config['section1']['keyword3']
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value4 = config['section1']['keyword4']
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Writing a Config File
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---------------------
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Creating a new config file is just as easy as reading one. You can specify a
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filename when you create the ConfigObj, or do it later [#]_.
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If you *don't* set a filename, then the ``write`` method will return a list of
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lines instead of writing to file. See the write_ method for more details.
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Here we show creating an empty ConfigObj, setting a filename and some values,
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and then writing to file :
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from configobj import ConfigObj
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config.filename = filename
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config['keyword1'] = value1
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config['keyword2'] = value2
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config['section1'] = {}
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config['section1']['keyword3'] = value3
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config['section1']['keyword4'] = value4
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config['section2'] = section2
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config['section3'] = {}
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config['section3']['keyword 8'] = [value8, value9, value10]
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config['section3']['keyword 9'] = [value11, value12, value13]
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Keywords and section names can only be strings [#]_. Attempting to set
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anything else will raise a ``ValueError``.
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The config files that ConfigObj will read and write are based on the 'INI'
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format. This means it will read and write files created for ``ConfigParser``
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Keywords and values are separated by an ``'='``, and section markers are
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between square brackets. Keywords, values, and section names can be surrounded
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by single or double quotes. Indentation is not significant, but can be
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Subsections are indicated by repeating the square brackets in the section
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marker. You nest levels by using more brackets.
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You can have list values by separating items with a comma, and values spanning
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multiple lines by using triple quotes (single or double).
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For full details on all these see `the config file format`_. Here's an example
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# This is the 'initial_comment'
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# Which may be several lines
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'keyword 2' = 'value 2'
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# This comment goes with keyword 3
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'keyword 4' = value4, value 5, 'value 6'
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[[ sub-section ]] # an inline comment
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# sub-section is inside "section 1"
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'keyword 5' = 'value 7'
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'keyword 6' = '''A multiline value,
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that spans more than one line :-)
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The line breaks are included in the value.'''
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[[[ sub-sub-section ]]]
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# sub-sub-section is *in* 'sub-section'
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# which is in 'section 1'
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'keyword 7' = 'value 8'
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[section 2] # an inline comment
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keyword9 = value10 # an inline comment
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# The 'final_comment'
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# Which also may be several lines
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ConfigObj specifications
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========================
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config = ConfigObj(infile=None, options=None, **keywargs)
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You don't need to specify an infile. If you omit it, an empty ConfigObj will be
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created. ``infile`` *can* be :
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* Nothing. In which case the ``filename`` attribute of your ConfigObj will be
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``None``. You can set a filename at any time.
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* A filename. What happens if the file doesn't already exist is determined by
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the options_ ``file_error`` and ``create_empty``. The filename will be
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preserved as the ``filename`` attribute. This can be changed at any time.
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* A list of lines. Any trailing newlines will be removed from the lines. The
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``filename`` attribute of your ConfigObj will be ``None``.
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* A ``StringIO`` instance or file object, or any object with a ``read`` method.
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The ``filename`` attribute of your ConfigObj will be ``None`` [#]_.
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* A dictionary. You can initialise a ConfigObj from a dictionary [#]_. The
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``filename`` attribute of your ConfigObj will be ``None``. All keys must be
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strings. In this case, the order of values and sections is arbitrary.
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There are various options that control the way ConfigObj behaves. They can be
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passed in as a dictionary of options, or as keyword arguments. Explicit keyword
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arguments override the dictionary.
343
All of the options are available as attributes after the config file has been
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ConfigObj has the following options (with the default values shown) :
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* 'raise_errors': ``False``
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When parsing, it is possible that the config file will be badly formed. The
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default is to parse the whole file and raise a single error at the end. You
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can set ``raise_errors = True`` to have errors raised immediately. See the
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exceptions_ section for more details.
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Altering this value after initial parsing has no effect.
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* 'list_values': ``True``
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If ``True`` (the default) then list values are possible. If ``False``, the
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values are not parsed for lists.
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If ``list_values = False`` then single line values are not quoted or
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unquoted when reading and writing.
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Changing this value affects whether single line values will be quoted or
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* 'create_empty': ``False``
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If this value is ``True`` and the file specified by ``infile`` doesn't
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exist, ConfigObj will create an empty file. This can be a useful test that
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the filename makes sense: an impossible filename will cause an error.
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Altering this value after initial parsing has no effect.
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* 'file_error': ``False``
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If this value is ``True`` and the file specified by ``infile`` doesn't
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exist, ConfigObj will raise an ``IOError``.
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Altering this value after initial parsing has no effect.
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* 'interpolation': ``True``
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Whether string interpolation is switched on or not. It is on (``True``) by
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You can set this attribute to change whether string interpolation is done
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when values are fetched. See the `String Interpolation`_ section for more details.
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* 'configspec': ``None``
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If you want to use the validation system, you supply a configspec. This is
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effectively a type of config file that specifies a check for each member.
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This check can be used to do type conversion as well as check that the
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value is within your required parameters.
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You provide a configspec in the same way as you do the initial file: a
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filename, or list of lines, etc. See the validation_ section for full
400
details on how to use the system.
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When parsed, every section has a ``configspec`` with a dictionary of
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configspec checks for *that section*.
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* 'stringify': ``True``
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If you use the validation scheme, it can do type checking *and* conversion
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for you. This means you may want to set members to integers, or other
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If 'stringify' is set to ``True`` (default) then non-string values will
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be converted to strings when you write the config file. The validation_
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process converts values from strings to the required type.
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If 'stringify' is set to ``False``, attempting to set a member to a
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non-string value [#]_ will raise a ``TypeError`` (no type conversion is
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* 'indent_type': ``' '``
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Indentation is not significant; it can however be present in the input and
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output config. Any combination of tabs and spaces may be used: the string
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will be repeated for each level of indentation. Typical values are: ``''``
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(no indentation), ``' '`` (indentation with four spaces, the default),
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``'\t'`` (indentation with one tab).
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If this option is not specified, and the ConfigObj is initialised with a
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dictionary, the indentation used in the output is the default one, that is,
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If this option is not specified, and the ConfigObj is initialised with a
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list of lines or a file, the indentation used in the first indented line is
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selected and used in all output lines. If no input line is indented, no
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output line will be either.
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If this option *is* specified, the option value is used in the output
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config, overriding the type of indentation in the input config (if any).
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* 'encoding': ``None``
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By default **ConfigObj** does not decode the file/strings you pass it into
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Unicode [#]_. If you want your config file as Unicode (keys and members)
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you need to provide an encoding to decode the file with. This encoding will
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also be used to encode the config file when writing.
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You can change the encoding attribute at any time.
448
Any characters in your strings that can't be encoded with the specified
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encoding will raise a ``UnicodeEncodeError``.
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``UTF16`` encoded files will automatically be detected and decoded,
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even if ``encoding`` is ``None``.
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This is because it is a 16-bit encoding, and ConfigObj will mangle it
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(split characters on byte boundaries) if it parses it without decoding.
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* 'default_encoding': ``None``
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When using the ``write`` method, **ConfigObj** uses the ``encoding``
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attribute to encode the Unicode strings. If any members (or keys) have
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been set as byte strings instead of Unicode, these must first be decoded
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to Unicode before outputting in the specified encoding.
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``default_encoding``, if specified, is the encoding used to decode byte
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strings in the **ConfigObj** before writing. If this is ``None``, then
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the Python default encoding (``sys.defaultencoding`` - usually ASCII) is
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For most Western European users, a value of ``latin-1`` is sensible.
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``default_encoding`` is *only* used if an ``encoding`` is specified.
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Any characters in byte-strings that can't be decoded using the
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``default_encoding`` will raise a ``UnicodeDecodeError``.
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* 'unrepr': ``False``
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The ``unrepr`` option reads and writes files in a different mode. This
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allows you to store and retrieve the basic Python data-types using config
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This uses Python syntax for lists and quoting. See `unrepr mode`_ for the
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* 'write_empty_values': ``False``
489
If ``write_empty_values`` is ``True``, empty strings are written as
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empty values. See `Empty Values`_ for more details.
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The ConfigObj is a subclass of an object called ``Section``, which is itself a
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subclass of ``dict``, the builtin dictionary type. This means it also has
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**all** the normal dictionary methods.
500
In addition, the following `Section Methods`_ may be useful :
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Read about Sections_ for details of all the methods.
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The *merge* method of sections is a recursive update.
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You can use this to merge sections, or even whole ConfigObjs, into each
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You would typically use this to create a default ConfigObj and then merge
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in user settings. This way users only need to specify values that are
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different from the default. You can use configspecs and validation to
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achieve the same thing of course.
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The public methods available on ConfigObj are :
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write(file_object=None)
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This method writes the current ConfigObj and takes a single, optional argument
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If you pass in a file like object to the ``write`` method, the config file will
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be written to this. (The only method of this object that is used is its
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``write`` method, so a ``StringIO`` instance, or any other file like object
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Otherwise, the behaviour of this method depends on the ``filename`` attribute
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ConfigObj will write the configuration to the file specified.
556
``write`` returns a list of lines. (Not ``'\n'`` terminated)
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First the 'initial_comment' is written, then the config file, followed by the
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'final_comment'. Comment lines and inline comments are written with each
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validate(validator, preserve_errors=False, copy=False)
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# filename is the config file
575
# filename2 is the configspec
576
# (which could also be hardcoded into your program)
577
config = ConfigObj(filename, configspec=filename2)
579
from validate import Validator
581
test = config.validate(val)
586
The validate method uses the `validate
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<http://www.voidspace.org.uk/python/validate.html>`__ module to do the
590
This method validates the ConfigObj against the configspec. By doing type
591
conversion as well it can abstract away the config file altogether and present
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the config *data* to your application (in the types it expects it to be).
594
If the ``configspec`` attribute of the ConfigObj is ``None``, it raises a
597
If the stringify_ attribute is set, this process will convert values to the
598
type defined in the configspec.
600
The validate method uses checks specified in the configspec and defined in the
601
``Validator`` object. It is very easy to extend.
603
The configspec looks like the config file, but instead of the value, you
604
specify the check (and any default value). See the validation_ section for
609
The system of configspecs can seem confusing at first, but is actually
610
quite simple and powerful. For a concrete example of how to use it, you may
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find this blog entry helpful :
612
`Transforming Values with ConfigObj <http://www.voidspace.org.uk/python/weblog/arch_d7_2006_03_04.shtml#e257>`_.
615
The ``copy`` parameter fills in missing values from the configspec (default
616
values), *without* marking the values as defaults. It also causes comments to
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be copied from the configspec into the config file. This allows you to use a
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configspec to create default config files. (Normally default values aren't
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written out by the ``write`` method.)
621
As of ConfigObj 4.3.0 you can also pass in a ConfigObj instance as your
622
configspec. This is especially useful if you need to specify the encoding of
623
your configspec file. When you read your configspec file, you *must* specify
624
``list_values=False``.
629
from configobj import ConfigObj
630
configspec = ConfigObj(configspecfilename, encoding='UTF8',
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config = ConfigObj(filename, configspec=configspec)
639
By default, the validate method either returns ``True`` (everything passed)
640
or a dictionary of ``True``/``False`` representing pass/fail. The dictionary
641
follows the structure of the ConfigObj.
643
If a whole section passes then it is replaced with the value ``True``. If a
644
whole section fails, then it is replaced with the value ``False``.
646
If a value is missing, and there is no default in the check, then the check
649
The ``validate`` method takes an optional keyword argument ``preserve_errors``.
650
If you set this to ``True``, instead of getting ``False`` for failed checks you
651
get the actual error object from the **validate** module. This usually contains
652
useful information about why the check failed.
654
See the `flatten_errors`_ function for how to turn your results dictionary into
655
a useful list of error messages.
657
Even if ``preserve_errors`` is ``True``, missing keys or sections will still be
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represented by a ``False`` in the results dictionary.
661
Mentioning Default Values
662
#########################
664
In the check in your configspec, you can specify a default to be used - by
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using the ``default`` keyword. E.g. ::
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key1 = integer(0, 30, default=15)
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key2 = integer(default=15)
669
key3 = boolean(default=True)
670
key4 = option('Hello', 'Goodbye', 'Not Today', default='Not Today')
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If the configspec check supplies a default and the value is missing in the
673
config, then the default will be set in your ConfigObj. (It is still passed to
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the ``Validator`` so that type conversion can be done: this means the default
675
value must still pass the check.)
677
ConfigObj keeps a record of which values come from defaults, using the
678
``defaults`` attribute of sections_. Any key in this list isn't written out by
679
the ``write`` method. If a key is set from outside (even to the same value)
680
then it is removed from the ``defaults`` list.
684
Even if all the keys in a section are in the defaults list, the section
685
marker is still written out.
687
There is additionally a special case default value of ``None``. If you set the
688
default value to ``None`` and the value is missing, the value will always be
689
set to ``None``. As the other checks don't return ``None`` (unless you
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implement your own that do), you can tell that this value came from a default
691
value (and was missing from the config file). It allows an easy way of
692
implementing optional values. Simply check (and ignore) members that are set
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If stringify_ is ``False`` then ``default=None`` returns ``''`` instead of
698
``None``. This is because setting a value to a non-string raises an error
699
if stringify is unset.
701
The default value can be a list. See `List Values`_ for the way to do this.
703
Writing invalid default values is a *guaranteed* way of confusing your users.
704
Default values **must** pass the check.
707
Mentioning Repeated Sections
708
############################
710
In the configspec it is possible to cause *every* sub-section in a section to
711
be validated using the same configspec. You do this with a section in the
712
configspec called ``__many__``. Every sub-section in that section has the
713
``__many__`` configspec applied to it (without you having to explicitly name
716
If you define a ``__many__`` type section it must the only sub-section in that
717
section. Having a ``__many__`` *and* other sub-sections defined in the same
718
section will raise a ``RepeatSectionError``.
720
Your ``__many__`` section can have nested subsections, which can also include
721
``__many__`` type sections.
723
See `Repeated Sections`_ for examples.
729
If you just want to check if all members are present, then you can use the
730
``SimpleVal`` object that comes with ConfigObj. It only fails members if they
733
Write a configspec that has all the members you want to check for, but set
734
every section to ``''``.
741
test = config.validate(val)
751
As discussed in `Mentioning Default Values`_, you can use a configspec to
752
supply default values. These are marked in the ConfigObj instance as defaults,
753
and *not* written out by the ``write`` mode. This means that your users only
754
need to supply values that are different from the defaults.
756
This can be inconvenient if you *do* want to write out the default values,
757
for example to write out a default config file.
759
If you set ``copy=True`` when you call validate, then no values are marked as
760
defaults. In addition, all comments from the configspec are copied into
761
your ConfigObj instance. You can then call ``write`` to create your config
764
There is a limitation with this. In order to allow `String Interpolation`_ to work
765
within configspecs, ``DEFAULT`` sections are not processed by
766
validation; even in copy mode.
772
If a ConfigObj instance was loaded from the filesystem, then this method will reload it. It
773
will also reuse any configspec you supplied at instantiation (including reloading it from
774
the filesystem if you passed it in as a filename).
776
If the ConfigObj does not have a filename attribute pointing to a file, then a ``ReloadError``
783
This method takes no arguments and doesn't return anything. It restores a ConfigObj
784
instance to a freshly created state.
790
A ConfigObj has the following attributes :
807
This doesn't include *comments*, *inline_comments*, *defaults*, or
808
*configspec*. These are actually attributes of Sections_.
810
It also has the following attributes as a result of parsing. They correspond to
811
options_ when the ConfigObj was created, but changing them has no effect.
821
ConfigObj can perform string interpolation in a *similar* way to
822
``ConfigParser``. See the `String Interpolation`_ section for full details.
824
If ``interpolation`` is set to ``False``, then interpolation is *not* done when
831
If this attribute is set (``True``) then the validate_ method changes the
832
values in the ConfigObj. These are turned back into strings when write_ is
835
If stringify is unset (``False``) then attempting to set a value to a non
836
string (or a list of strings) will raise a ``TypeError``.
842
If the initial config file *started* with the UTF8 Unicode signature (known
843
slightly incorrectly as the {acro;BOM;Byte Order Mark}), or the UTF16 BOM, then
844
this attribute is set to ``True``. Otherwise it is ``False``.
846
If it is set to ``True`` when ``write`` is called then, if ``encoding`` is set
847
to ``None`` *or* to ``utf_8`` (and variants) a UTF BOM will be written.
849
For UTF16 encodings, a BOM is *always* written.
855
This is a list of lines. If the ConfigObj is created from an existing file, it
856
will contain any lines of comments before the start of the members.
858
If you create a new ConfigObj, this will be an empty list.
860
The write method puts these lines before it starts writing out the members.
866
This is a list of lines. If the ConfigObj is created from an existing file, it
867
will contain any lines of comments after the last member.
869
If you create a new ConfigObj, this will be an empty list.
871
The ``write`` method puts these lines after it finishes writing out the
878
This attribute is ``True`` or ``False``. If set to ``False`` then values are
879
not parsed for list values. In addition single line values are not unquoted.
881
This allows you to do your own parsing of values. It exists primarily to
882
support the reading of the configspec_ - but has other use cases.
884
For example you could use the ``LineParser`` from the
885
`listquote module <http://www.voidspace.org.uk/python/listquote.html#lineparser>`_
886
to read values for nested lists.
888
Single line values aren't quoted when writing - but multiline values are
893
Because values aren't quoted, leading or trailing whitespace can be
896
This behaviour was changed in version 4.0.1.
898
Prior to this, single line values might have been quoted; even with
899
``list_values=False``. This means that files written by **ConfigObj**
900
*could* now be incompatible - and need the quotes removing by hand.
906
This is the encoding used to encode the output, when you call ``write``. It
907
must be a valid encoding `recognised by Python <http://docs.python.org/lib/standard-encodings.html>`_.
909
If this value is ``None`` then no encoding is done when ``write`` is called.
915
If encoding is set, any byte-strings in your ConfigObj instance (keys or
916
members) will first be decoded to Unicode using the encoding specified by the
917
``default_encoding`` attribute. This ensures that the output is in the encoding
920
If this value is ``None`` then ``sys.defaultencoding`` is used instead.
926
Another boolean value. If this is set, then ``repr(value)`` is used to write
927
values. This writes values in a slightly different way to the normal ConfigObj
930
This preserves basic Python data-types when read back in. See `unrepr mode`_
937
Also boolean. If set, values that are an empty string (``''``) are written as
938
empty values. See `Empty Values`_ for more details.
944
When a config file is read, ConfigObj records the type of newline separators in the
945
file and uses this separator when writing. It defaults to ``None``, and ConfigObj
946
uses the system default (``os.sep``) if write is called without newlines having
950
The Config File Format
951
======================
953
You saw an example config file in the `Config Files`_ section. Here is a fuller
954
specification of the config files used and created by ConfigObj.
956
The basic pattern for keywords is : ::
960
keyword = value # inline comment
962
Both keyword and value can optionally be surrounded in quotes. The equals sign
963
is the only valid divider.
965
Values can have comments on the lines above them, and an inline comment after
966
them. This, of course, is optional. See the comments_ section for details.
968
If a keyword or value starts or ends with whitespace, or contains a quote mark
969
or comma, then it should be surrounded by quotes. Quotes are not necessary if
970
whitespace is surrounded by non-whitespace.
972
Values can also be lists. Lists are comma separated. You indicate a single
973
member list by a trailing comma. An empty list is shown by a single comma : ::
975
keyword1 = value1, value2, value3
976
keyword2 = value1, # a single member list
977
keyword3 = , # an empty list
979
Values that contain line breaks (multi-line values) can be surrounded by triple
980
quotes. These can also be used if a value contains both types of quotes. List
981
members cannot be surrounded by triple quotes : ::
983
keyword1 = ''' A multi line value
985
lines''' # with a comment
986
keyword2 = '''I won't be "afraid".'''
988
keyword3 = """ A multi line value
990
lines""" # with a comment
991
keyword4 = """I won't be "afraid"."""
995
There is no way of safely quoting values that contain both types of triple
998
A line that starts with a '#', possibly preceded by whitespace, is a comment.
1000
New sections are indicated by a section marker line. That is the section name
1001
in square brackets. Whitespace around the section name is ignored. The name can
1002
be quoted with single or double quotes. The marker can have comments before it
1003
and an inline comment after it : ::
1006
[ section name 1 ] # first section
1009
# The Second Section
1010
[ "section name 2" ] # second section
1013
Any subsections (sections that are *inside* the current section) are
1014
designated by repeating the square brackets before and after the section name.
1015
The number of square brackets represents the nesting level of the sub-section.
1016
Square brackets may be separated by whitespace; such whitespace, however, will
1017
not be present in the output config written by the ``write`` method.
1019
Indentation is not significant, but can be preserved. See the description of
1020
the ``indent_type`` option, in the `ConfigObj specifications`_ chapter, for the
1023
A *NestingError* will be raised if the number of the opening and the closing
1024
brackets in a section marker is not the same, or if a sub-section's nesting
1025
level is greater than the nesting level of it parent plus one.
1027
In the outer section, single values can only appear before any sub-section.
1028
Otherwise they will belong to the sub-section immediately before them. ::
1039
# this is in section 1
1043
[[[nested section]]]
1044
# this is in sub section
1049
# this is in section 1 again
1054
# this is also in section 1, indentation is misleading here
1060
When parsed, the above config file produces the following data structure :
1067
'keyword1': 'value1',
1068
'keyword2': 'value2',
1070
'keyword1': 'value1',
1071
'keyword2': 'value2',
1073
'keyword1': 'value1',
1074
'keyword2': 'value2',
1076
'keyword1': 'value1',
1077
'keyword2': 'value2',
1081
'keyword1': 'value1',
1082
'keyword2': 'value2',
1085
'keyword1': 'value1',
1086
'keyword2': 'value2',
1093
Sections are ordered: note how the structure of the resulting ConfigObj is in
1094
the same order as the original file.
1098
In ConfigObj 4.3.0 *empty values* became valid syntax. They are read as the
1099
empty string. There is also an option/attribute (``write_empty_values``) to
1100
allow the writing of these.
1102
This is mainly to support 'legacy' config files, written from other
1103
applications. This is documented under `Empty Values`_.
1105
`unrepr mode`_ introduces *another* syntax variation, used for storing
1106
basic Python datatypes in config files. {sm;:-)}
1112
Every section in a ConfigObj has certain properties. The ConfigObj itself also
1113
has these properties, because it too is a section (sometimes called the *root
1116
``Section`` is a subclass of the standard new-class dictionary, therefore it
1117
has **all** the methods of a normal dictionary. This means you can ``update``
1118
and ``clear`` sections.
1122
You create a new section by assigning a member to be a dictionary.
1124
The new ``Section`` is created *from* the dictionary, but isn't the same
1125
thing as the dictionary. (So references to the dictionary you use to create
1126
the section *aren't* references to the new section).
1134
config = ConfigObj()
1135
vals = {'key1': 'value 1',
1138
config['vals'] = vals
1139
config['vals'] == vals
1141
config['vals'] is vals
1146
If you now change ``vals``, the changes won't be reflected in ``config['vals']``.
1148
A section is ordered, following its ``scalars`` and ``sections``
1149
attributes documented below. This means that the following dictionary
1150
attributes return their results in order.
1154
More commonly known as ``for member in section:``.
1156
* '__repr__' and '__str__'
1158
Any time you print or display the ConfigObj.
1180
A reference to the main ConfigObj.
1184
A reference to the 'parent' section, the section that this section is a
1187
On the ConfigObj this attribute is a reference to itself. You can use this
1188
to walk up the sections, stopping when ``section.parent is section``.
1192
The nesting level of the current section.
1194
If you create a new ConfigObj and add sections, 1 will be added to the
1195
depth level between sections.
1199
This attribute is a list of scalars that came from default values. Values
1200
that came from defaults aren't written out by the ``write`` method.
1201
Setting any of these values in the section removes them from the defaults
1206
This attribute is a dictionary mapping keys to the default values for the
1207
keys. By default it is an empty dictionary and is populated when you
1208
validate the ConfigObj.
1212
These attributes are normal lists, representing the order that members,
1213
single values and subsections appear in the section. The order will either
1214
be the order of the original config file, *or* the order that you added
1217
The order of members in this lists is the order that ``write`` creates in
1218
the config file. The ``scalars`` list is output before the ``sections``
1221
Adding or removing members also alters these lists. You can manipulate the
1222
lists directly to alter the order of members.
1226
If you alter the ``scalars``, ``sections``, or ``defaults`` attributes
1227
so that they no longer reflect the contents of the section, you will
1228
break your ConfigObj.
1230
See also the ``rename`` method.
1234
This is a dictionary of comments associated with each member. Each entry is
1235
a list of lines. These lines are written out before the member.
1239
This is *another* dictionary of comments associated with each member. Each
1240
entry is a string that is put inline with the member.
1244
The configspec attribute is a dictionary mapping scalars to *checks*. A
1245
check defines the expected type and possibly the allowed values for a
1248
The configspec has the same format as a config file, but instead of values
1249
it has a specification for the value (which may include a default value).
1250
The validate_ method uses it to check the config file makes sense. If a
1251
configspec is passed in when the ConfigObj is created, then it is parsed
1252
and broken up to become the ``configspec`` attribute of each section.
1254
If you didn't pass in a configspec, this attribute will be ``None`` on the
1255
root section (the main ConfigObj).
1257
You can set the configspec attribute directly on a section.
1259
See the validation_ section for full details of how to write configspecs.
1267
This method takes no arguments. It returns a deep copy of the section as a
1268
dictionary. All subsections will also be dictionaries, and list values will
1269
be copies, rather than references to the original [#]_.
1273
``rename(oldkey, newkey)``
1275
This method renames a key, without affecting its position in the sequence.
1277
It is mainly implemented for the ``encode`` and ``decode`` methods, which
1278
provide some Unicode support.
1284
This method is a *recursive update* method. It allows you to merge two
1285
config files together.
1287
You would typically use this to create a default ConfigObj and then merge
1288
in user settings. This way users only need to specify values that are
1289
different from the default.
1297
# def_cfg contains your default config settings
1298
# user_cfg contains the user settings
1299
cfg = ConfigObj(def_cfg)
1300
usr = ConfigObj(user_cfg)
1305
cfg now contains a combination of the default settings and the user
1308
The user settings will have overwritten any of the default ones.
1315
This method can be used to transform values and names. See `walking a
1316
section`_ for examples and explanation.
1320
``decode(encoding)``
1322
This method decodes names and values into Unicode objects, using the
1327
``encode(encoding)``
1329
This method is the opposite of ``decode`` {sm;:!:}.
1331
It encodes names and values using the supplied encoding. If any of your
1332
names/values are strings rather than Unicode, Python will have to do an
1333
implicit decode first. (This method uses ``sys.defaultencoding`` for
1340
Returns ``True`` if the key contains a string that represents ``True``, or
1341
is the ``True`` object.
1343
Returns ``False`` if the key contains a string that represents ``False``,
1344
or is the ``False`` object.
1346
Raises a ``ValueError`` if the key contains anything else.
1348
Strings that represent ``True`` are (not case sensitive) : ::
1352
Strings that represent ``False`` are : ::
1358
In ConfigObj 4.1.0, this method was called ``istrue``. That method is
1359
now deprecated and will issue a warning when used. It will go away
1360
in a future release.
1366
This returns the value contained in the specified key as an integer.
1368
It raises a ``ValueError`` if the conversion can't be done.
1374
This returns the value contained in the specified key as a float.
1376
It raises a ``ValueError`` if the conversion can't be done.
1378
* **restore_default**
1380
``restore_default(key)``
1382
Restore (and return) the default value for the specified key.
1384
This method will only work for a ConfigObj that was created
1385
with a configspec and has been validated.
1387
If there is no default value for this key, ``KeyError`` is raised.
1389
* **restore_defaults**
1391
``restore_defaults()``
1393
Recursively restore default values to all members
1396
This method will only work for a ConfigObj that was created
1397
with a configspec and has been validated.
1399
It doesn't delete or modify entries without default values.
1407
The walk method allows you to call a function on every member/name.
1413
walk(function, raise_errors=True,
1414
call_on_sections=False, **keywargs):
1418
``walk`` is a method of the ``Section`` object. This means it is also a method
1421
It walks through every member and calls a function on the keyword and value. It
1422
walks recursively through subsections.
1424
It returns a dictionary of all the computed values.
1426
If the function raises an exception, the default is to propagate the error, and
1427
stop. If ``raise_errors=False`` then it sets the return value for that keyword
1428
to ``False`` instead, and continues. This is similar to the way validation_
1431
Your function receives the arguments ``(section, key)``. The current value is
1432
then ``section[key]`` [#]_. Any unrecognised keyword arguments you pass to
1433
walk, are passed on to the function.
1435
Normally ``walk`` just recurses into subsections. If you are transforming (or
1436
checking) names as well as values, then you want to be able to change the names
1437
of sections. In this case set ``call_on_sections`` to ``True``. Now, on
1438
encountering a sub-section, *first* the function is called for the *whole*
1439
sub-section, and *then* it recurses into it's members. This means your function
1440
must be able to handle receiving dictionaries as well as strings and lists.
1442
If you are using the return value from ``walk`` *and* ``call_on_sections``,
1443
note that walk discards the return value when it calls your function.
1447
You can use ``walk`` to transform the names of members of a section
1448
but you mustn't add or delete members.
1454
Examples that use the walk method are the ``encode`` and ``decode`` methods.
1455
They both define a function and pass it to walk. Because these functions
1456
transform names as well as values (from byte strings to Unicode) they set
1457
``call_on_sections=True``.
1459
To see how they do it, *read the source Luke* {sm;:cool:}.
1461
You can use this for transforming all values in your ConfigObj. For example
1462
you might like the nested lists from ConfigObj 3. This was provided by the
1463
listquote_ module. You could switch off the parsing for list values
1464
(``list_values=False``) and use listquote to parse every value.
1466
Another thing you might want to do is use the Python escape codes in your
1467
values. You might be *used* to using ``\n`` for line feed and ``\t`` for tab.
1468
Obviously we'd need to decode strings that come from the config file (using the
1469
escape codes). Before writing out we'll need to put the escape codes back in
1472
As an example we'll write a function to use with walk, that encodes or decodes
1473
values using the ``string-escape`` codec.
1475
The function has to take each value and set the new value. As a bonus we'll
1476
create one function that will do decode *or* encode depending on a keyword
1479
We don't want to work with section names, we're only transforming values, so
1480
we can leave ``call_on_sections`` as ``False``. This means the two datatypes we
1481
have to handle are strings and lists, we can ignore everything else. (We'll
1482
treat tuples as lists as well).
1484
We're not using the return values, so it doesn't need to return anything, just
1485
change the values if appropriate.
1491
def string_escape(section, key, encode=False):
1493
A function to encode or decode using the 'string-escape' codec.
1494
To be passed to the walk method of a ConfigObj.
1495
By default it decodes.
1496
To encode, pass in the keyword argument ``encode=True``.
1499
# is it a type we can work with
1500
# NOTE: for platforms where Python > 2.2
1501
# you can use basestring instead of (str, unicode)
1502
if not isinstance(val, (str, unicode, list, tuple)):
1505
elif isinstance(val, (str, unicode)):
1508
section[key] = val.decode('string-escape')
1510
section[key] = val.encode('string-escape')
1512
# it must be a list or tuple!
1513
# we'll be lazy and create a new list
1515
# we'll check every member of the list
1517
if isinstance(entry, (str, unicode)):
1519
newval.append(entry.decode('string-escape'))
1521
newval.append(entry.encode('string-escape'))
1523
newval.append(entry)
1525
section[key] = newval
1527
# assume we have a ConfigObj called ``config``
1530
config.walk(string_escape)
1533
# Because ``walk`` doesn't recognise the ``encode`` argument
1534
# it passes it to our function.
1535
config.walk(string_escape, encode=True)
1539
Here's a simple example of using ``walk`` to transform names and values. One
1540
usecase of this would be to create a *standard* config file with placeholders
1541
for section and keynames. You can then use walk to create new config files
1542
and change values and member names :
1548
# We use 'XXXX' as a placeholder
1550
XXXXkey1 = XXXXvalue1
1551
XXXXkey2 = XXXXvalue2
1552
XXXXkey3 = XXXXvalue3
1554
XXXXkey1 = XXXXvalue1
1555
XXXXkey2 = XXXXvalue2
1556
XXXXkey3 = XXXXvalue3
1558
XXXXkey1 = XXXXvalue1
1559
XXXXkey2 = XXXXvalue2
1560
XXXXkey3 = XXXXvalue3
1562
XXXXkey1 = XXXXvalue1
1563
XXXXkey2 = XXXXvalue2
1564
XXXXkey3 = XXXXvalue3
1566
cfg = ConfigObj(config)
1568
def transform(section, key):
1570
newkey = key.replace('XXXX', 'CLIENT1')
1571
section.rename(key, newkey)
1572
if isinstance(val, (tuple, list, dict)):
1575
val = val.replace('XXXX', 'CLIENT1')
1576
section[newkey] = val
1578
cfg.walk(transform, call_on_sections=True)
1580
ConfigObj({'CLIENT1key1': 'CLIENT1value1', 'CLIENT1key2': 'CLIENT1value2',
1581
'CLIENT1key3': 'CLIENT1value3',
1582
'CLIENT1section1': {'CLIENT1key1': 'CLIENT1value1',
1583
'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3'},
1584
'CLIENT1section2': {'CLIENT1key1': 'CLIENT1value1',
1585
'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3',
1586
'CLIENT1section1': {'CLIENT1key1': 'CLIENT1value1',
1587
'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3'}}})
1595
There are several places where ConfigObj may raise exceptions (other than
1598
1) If a configspec filename you pass in doesn't exist, or a config file
1599
filename doesn't exist *and* ``file_error=True``, an ``IOError`` will be
1602
2) If you try to set a non-string key, or a non string value when
1603
``stringify=False``, a ``TypeError`` will be raised.
1605
3) A badly built config file will cause parsing errors.
1607
4) A parsing error can also occur when reading a configspec.
1609
5) In string interpolation you can specify a value that doesn't exist, or
1610
create circular references (recursion).
1612
6) If you have a ``__many__`` repeated section with other section definitions
1613
(in a configspec), a ``RepeatSectionError`` will be raised.
1615
Number 5 (which is actually two different types of exceptions) is documented
1616
in `String Interpolation`_.
1618
Number 6 is explained in the validation_ section.
1620
*This* section is about errors raised during parsing.
1622
The base error class is ``ConfigObjError``. This is a subclass of
1623
``SyntaxError``, so you can trap for ``SyntaxError`` without needing to
1624
directly import any of the ConfigObj exceptions.
1626
The following other exceptions are defined (all deriving from
1627
``ConfigObjError``) :
1631
This error indicates either a mismatch in the brackets in a section marker,
1632
or an excessive level of nesting.
1636
This error indicates that a line is badly written. It is neither a valid
1637
``key = value`` line, nor a valid section marker line, nor a comment line.
1639
* ``DuplicateError``
1641
The keyword or section specified already exists.
1643
* ``ConfigspecError``
1645
An error occurred whilst parsing a configspec.
1649
An error occurred when parsing a value in `unrepr mode`_.
1653
``reload`` was called on a ConfigObj instance that doesn't have a valid
1656
When parsing a configspec, ConfigObj will stop on the first error it
1657
encounters. It will raise a ``ConfigspecError``. This will have an ``error``
1658
attribute, which is the actual error that was raised.
1660
Behaviour when parsing a config file depends on the option ``raise_errors``.
1661
If ConfigObj encounters an error while parsing a config file:
1663
If ``raise_errors=True`` then ConfigObj will raise the appropriate error
1664
and parsing will stop.
1666
If ``raise_errors=False`` (the default) then parsing will continue to the
1667
end and *all* errors will be collected.
1669
If ``raise_errors`` is False and multiple errors are found a ``ConfigObjError``
1670
is raised. The error raised has a ``config`` attribute, which is the parts of
1671
the ConfigObj that parsed successfully. It also has an attribute ``errors``,
1672
which is a list of *all* the errors raised. Each entry in the list is an
1673
instance of the appropriate error type. Each one has the following attributes
1674
(useful for delivering a sensible error message to your user) :
1676
* ``line``: the original line that caused the error.
1678
* ``line_number``: its number in the config file.
1680
* ``message``: the error message that accompanied the error.
1682
If only one error is found, then that error is re-raised. The error still has
1683
the ``config`` and ``errors`` attributes. This means that your error handling
1684
code can be the same whether one error is raised in parsing , or several.
1686
It also means that in the most common case (a single error) a useful error
1687
message will be raised.
1691
One wrongly written line could break the basic structure of your config
1692
file. This could cause every line after it to flag an error, so having a
1693
list of all the lines that caused errors may not be as useful as it sounds.
1702
The system of configspecs can seem confusing at first, but is actually
1703
quite simple and powerful. For a concrete example of how to use it, you may
1704
find this blog entry helpful :
1705
`Transforming Values with ConfigObj <http://www.voidspace.org.uk/python/weblog/arch_d7_2006_03_04.shtml#e257>`_.
1707
Validation is done through a combination of the configspec_ and a ``Validator``
1708
object. For this you need *validate.py* [#]_. See downloading_ if you don't
1711
Validation can perform two different operations :
1713
1) Check that a value meets a specification. For example, check that a value
1714
is an integer between one and six, or is a choice from a specific set of
1717
2) It can convert the value into the type required. For example, if one of
1718
your values is a port number, validation will turn it into an integer for
1721
So validation can act as a transparent layer between the datatypes of your
1722
application configuration (boolean, integers, floats, etc) and the text format
1723
of your config file.
1729
The ``validate`` method checks members against an entry in the configspec. Your
1730
configspec therefore resembles your config file, with a check for every member.
1732
In order to perform validation you need a ``Validator`` object. This has
1733
several useful built-in check functions. You can also create your own custom
1734
functions and register them with your Validator object.
1736
Each check is the name of one of these functions, including any parameters and
1737
keyword arguments. The configspecs look like function calls, and they map to
1740
The basic datatypes that an un-extended Validator can test for are :
1742
* boolean values (True and False)
1743
* integers (including minimum and maximum values)
1744
* floats (including min and max)
1745
* strings (including min and max length)
1746
* IP addresses (v4 only)
1748
It can also handle lists of these types and restrict a value to being one from
1751
An example configspec is going to look something like : ::
1753
port = integer(0, 100)
1754
user = string(max=25)
1755
mode = option('quiet', 'loud', 'silent')
1757
You can specify default values, and also have the same configspec applied to
1758
several sections. This is called `repeated sections`_.
1760
For full details on writing configspecs, please refer to the `validate.py
1765
Your configspec is read by ConfigObj in the same way as a config file.
1767
That means you can do interpolation *within* your configspec.
1769
In order to allow this, checks in the 'DEFAULT' section (of the root level
1770
of your configspec) are *not* used.
1772
If you need to specify the encoding of your configspec, then you can pass in a
1773
ConfigObj instance as your configspec. When you read your configspec file, you
1774
*must* specify ``list_values=False``.
1779
from configobj import ConfigObj
1780
configspec = ConfigObj(configspecfilename, encoding='UTF8',
1782
config = ConfigObj(filename, configspec=configspec)
1785
.. _validate.py documentation: http://www.voidspace.org.uk/python/validate.html
1791
By default, validation does type conversion. This means that if you specify
1792
``integer`` as the check, then calling validate_ will actually change the value
1793
to an integer (so long as the check succeeds).
1795
It also means that when you call the write_ method, the value will be converted
1796
back into a string using the ``str`` function.
1798
To switch this off, and leave values as strings after validation, you need to
1799
set the stringify_ attribute to ``False``. If this is the case, attempting to
1800
set a value to a non-string will raise an error.
1806
You can set a default value in your check. If the value is missing from the
1807
config file then this value will be used instead. This means that your user
1808
only has to supply values that differ from the defaults.
1810
If you *don't* supply a default then for a value to be missing is an error,
1811
and this will show in the `return value`_ from validate.
1813
Additionally you can set the default to be ``None``. This means the value will
1814
be set to ``None`` (the object) *whichever check is used*. (It will be set to
1815
``''`` rather than ``None`` if stringify_ is ``False``). You can use this
1816
to easily implement optional values in your config files. ::
1818
port = integer(0, 100, default=80)
1819
user = string(max=25, default=0)
1820
mode = option('quiet', 'loud', 'silent', default='loud')
1821
nick = string(default=None)
1825
Because the default goes through type conversion, it also has to pass the
1828
Note that ``default=None`` is case sensitive.
1834
It's possible that you will want to specify a list as a default value. To avoid
1835
confusing syntax with commas and quotes you use a list constructor to specify
1836
that keyword arguments are lists. This includes the ``default`` value. This
1837
makes checks look something like : ::
1839
checkname(default=list('val1', 'val2', 'val3'))
1841
This works with all keyword arguments, but is most useful for default values.
1847
Repeated sections are a way of specifying a configspec for a section that
1848
should be applied to *all* subsections in the same section.
1850
The easiest way of explaining this is to give an example. Suppose you have a
1851
config file that describes a dog. That dog has various attributes, but it can
1852
also have many fleas. You don't know in advance how many fleas there will be,
1853
or what they will be called, but you want each flea validated against the same
1856
We can define a section called *fleas*. We want every flea in that section
1857
(every sub-section) to have the same configspec applied to it. We do this by
1858
defining a single section called ``__many__``. ::
1861
name = string(default=Rover)
1862
age = float(0, 99, default=0)
1867
bloodsucker = boolean(default=True)
1868
children = integer(default=10000)
1869
size = option(small, tiny, micro, default=tiny)
1871
Every flea on our dog will now be validated using the ``__many__`` configspec.
1873
If you define another sub-section in a section *as well as* a ``__many__`` then
1874
you will get an error.
1876
``__many__`` sections can have sub-sections, including their own ``__many__``
1877
sub-sections. Defaults work in the normal way in repeated sections.
1883
Because you can specify default values in your configspec, you can use
1884
ConfigObj to write out default config files for your application.
1886
However, normally values supplied from a default in a configspec are *not*
1887
written out by the ``write`` method.
1889
To do this, you need to specify ``copy=True`` when you call validate. As well
1890
as not marking values as default, all the comments in the configspec file
1891
will be copied into your ConfigObj instance.
1896
from configobj import ConfigObj
1897
from validate import Validator
1899
config = ConfigObj(configspec='default.ini')
1900
config.filename = 'new_default.ini'
1901
config.validate(vdt, copy=True)
1906
Validation and Interpolation
1907
----------------------------
1909
String interpolation and validation don't play well together. When validation
1910
changes type it sets the value. If the value uses interpolation, then the
1911
interpolation reference would normally be overwritten. Calling ``write`` would
1912
then use the absolute value and the interpolation reference would be lost.
1914
As a compromise - if the value is unchanged by validation then it is not reset.
1915
This means strings that pass through validation unmodified will not be
1916
overwritten. If validation changes type - the value has to be overwritten, and
1917
any interpolation references are lost {sm;:-(}.
1923
You may not need a full validation process, but still want to check if all the
1924
expected values are present.
1926
Provided as part of the ConfigObj module is the ``SimpleVal`` object. This has
1927
a dummy ``test`` method that always passes.
1929
The only reason a test will fail is if the value is missing. The return value
1930
from ``validate`` will either be ``True``, meaning all present, or a dictionary
1931
with ``False`` for all missing values/sections.
1933
To use it, you still need to pass in a valid configspec when you create the
1934
ConfigObj, but just set all the values to ``''``. Then create an instance of
1935
``SimpleVal`` and pass it to the ``validate`` method.
1937
As a trivial example if you had the following config file : ::
1939
# config file for an application
1943
top_level_domain = org.uk
1945
You would write the following configspec : ::
1950
top_level_domain = ''
1956
config = Configobj(filename, configspec=configspec)
1958
test = config.validate(val)
1960
print 'All values present.'
1962
print 'No values present!'
1965
if test[entry] == False:
1966
print '"%s" missing.' % entry
1974
Many config files from other applications allow empty values. As of version
1975
4.3.0, ConfigObj will read these as an empty string.
1977
A new option/attribute has been added (``write_empty_values``) to allow
1978
ConfigObj to write empty strings as empty values.
1983
from configobj import ConfigObj
1988
config = ConfigObj(cfg)
1990
ConfigObj({'key': '', 'key2': ''})
1992
config.write_empty_values = True
1993
for line in config.write():
2004
The ``unrepr`` option allows you to store and retrieve the basic Python
2005
data-types using config files. It has to use a slightly different syntax to
2006
normal ConfigObj files. Unsurprisingly it uses Python syntax.
2008
This means that lists are different (they are surrounded by square brackets),
2009
and strings *must* be quoted.
2011
The types that ``unrepr`` can work with are :
2013
| strings, lists tuples
2015
| dictionaries, integers, floats
2016
| longs and complex numbers
2018
You can't store classes, types or instances.
2020
``unrepr`` uses ``repr(object)`` to write out values, so it currently *doesn't*
2021
check that you are writing valid objects. If you attempt to read an unsupported
2022
value, ConfigObj will raise a ``configobj.UnknownType`` exception.
2024
Values that are triple quoted cased. The triple quotes are removed *before*
2025
converting. This means that you can use triple quotes to write dictionaries
2026
over several lines in your config files. They won't be written like this
2029
If you are writing config files by hand, for use with ``unrepr``, you should
2030
be aware of the following differences from normal ConfigObj syntax :
2032
| List : ``['A List', 'With', 'Strings']``
2033
| Strings : ``"Must be quoted."``
2034
| Backslash : ``"The backslash must be escaped \\"``
2036
These all follow normal Python syntax.
2038
In unrepr mode *inline comments* are not saved. This is because lines are
2039
parsed using the `compiler package <http://docs.python.org/lib/compiler.html>`_
2040
which discards comments.
2043
String Interpolation
2044
====================
2046
ConfigObj allows string interpolation *similar* to the way ``ConfigParser``
2047
or ``string.Template`` work. The value of the ``interpolation`` attribute
2048
determines which style of interpolation you want to use. Valid values are
2049
"ConfigParser" or "Template" (case-insensitive, so "configparser" and
2050
"template" will also work). For backwards compatibility reasons, the value
2051
``True`` is also a valid value for the ``interpolation`` attribute, and
2052
will select ``ConfigParser``-style interpolation. At some undetermined point
2053
in the future, that default *may* change to ``Template``-style interpolation.
2055
For ``ConfigParser``-style interpolation, you specify a value to be
2056
substituted by including ``%(name)s`` in the value.
2058
For ``Template``-style interpolation, you specify a value to be substituted
2059
by including ``${cl}name{cr}`` in the value. Alternately, if 'name' is a valid
2060
Python identifier (i.e., is composed of nothing but alphanumeric characters,
2061
plus the underscore character), then the braces are optional and the value
2062
can be written as ``$name``.
2064
Note that ``ConfigParser``-style interpolation and ``Template``-style
2065
interpolation are mutually exclusive; you cannot have a configuration file
2066
that's a mix of one or the other. Pick one and stick to it. ``Template``-style
2067
interpolation is simpler to read and write by hand, and is recommended if
2068
you don't have a particular reason to use ``ConfigParser``-style.
2070
Interpolation checks first the current section to see if ``name`` is the key
2071
to a value. ('name' is case sensitive).
2073
If it doesn't find it, next it checks the 'DEFAULT' sub-section of the current
2076
If it still doesn't find it, it moves on to check the parent section and the
2077
parent section's 'DEFAULT' subsection, and so on all the way up to the main
2080
If the value specified isn't found in any of these locations, then a
2081
``MissingInterpolationOption`` error is raised (a subclass of
2082
``ConfigObjError``).
2084
If it is found then the returned value is also checked for substitutions. This
2085
allows you to make up compound values (for example directory paths) that use
2086
more than one default value. It also means it's possible to create circular
2087
references. If there are any circular references which would cause an infinite
2088
interpolation loop, an ``InterpolationLoopError`` is raised.
2090
Both of these errors are subclasses of ``InterpolationError``, which is a
2091
subclass of ``ConfigObjError``.
2093
String interpolation and validation don't play well together. This is because
2094
validation overwrites values - and so may erase the interpolation references.
2095
See `Validation and Interpolation`_. (This can only happen if validation
2096
has to *change* the value).
2102
Any line that starts with a '#', possibly preceded by whitespace, is a comment.
2104
If a config file starts with comments then these are preserved as the
2107
If a config file ends with comments then these are preserved as the
2110
Every key or section marker may have lines of comments immediately above it.
2111
These are saved as the ``comments`` attribute of the section. Each member is a
2114
You can also have a comment inline with a value. These are saved as the
2115
``inline_comments`` attribute of the section, with one entry per member of the
2118
Subsections (section markers in the config file) can also have comments.
2120
See `Section Attributes`_ for more on these attributes.
2122
These comments are all written back out by the ``write`` method.
2130
flatten_errors(cfg, res)
2132
Validation_ is a powerful way of checking that the values supplied by the user
2135
The validate_ method returns a results dictionary that represents pass or fail
2136
for each value. This doesn't give you any information about *why* the check
2139
``flatten_errors`` is an example function that turns a results dictionary into
2140
a flat list, that only contains values that *failed*.
2142
``cfg`` is the ConfigObj instance being checked, ``res`` is the results
2143
dictionary returned by ``validate``.
2145
It returns a list of keys that failed. Each member of the list is a tuple : ::
2147
([list of sections...], key, result)
2149
If ``validate`` was called with ``preserve_errors=False`` (the default)
2150
then ``result`` will always be ``False``.
2152
*list of sections* is a flattened list of sections that the key was found
2155
If the section was missing then key will be ``None``.
2157
If the value (or section) was missing then ``result`` will be ``False``.
2159
If ``validate`` was called with ``preserve_errors=True`` and a value
2160
was present, but failed the check, then ``result`` will be the exception
2161
object returned. You can use this as a string that describes the failure.
2165
*The value "3" is of the wrong type*.
2171
The output from ``flatten_errors`` is a list of tuples.
2173
Here is an example of how you could present this information to the user.
2179
vtor = validate.Validator()
2180
# ini is your config file - cs is the configspec
2181
cfg = ConfigObj(ini, configspec=cs)
2182
res = cfg.validate(vtor, preserve_errors=True)
2183
for entry in flatten_errors(cfg, res):
2184
# each entry is a tuple
2185
section_list, key, error = entry
2187
section_list.append(key)
2189
section_list.append('[missing section]')
2190
section_string = ', '.join(section_list)
2192
error = 'Missing value or section.'
2193
print section_string, ' = ', error
2201
ConfigObj 3 is now deprecated in favour of ConfigObj 4. I can fix bugs in
2202
ConfigObj 3 if needed, though.
2204
For anyone who still needs it, you can download it here: `ConfigObj 3.3.1`_
2206
You can read the old docs at : `ConfigObj 3 Docs`_
2208
.. _ConfigObj 3.3.1: http://www.voidspace.org.uk/cgi-bin/voidspace/downman.py?file=configobj3.zip
2209
.. _ConfigObj 3 Docs: http://www.voidspace.org.uk/python/configobj3.html
2215
ConfigObj 4 is written by (and copyright) `Michael Foord`_ and
2218
Particularly thanks to Nicola Larosa for help on the config file spec, the
2219
validation system and the doctests.
2221
*validate.py* was originally written by Michael Foord and Mark Andrews.
2223
Thanks to others for input and bugfixes.
2229
ConfigObj, and related files, are licensed under the BSD license. This is a
2230
very unrestrictive license, but it comes with the usual disclaimer. This is
2231
free software: test it, break it, just don't blame us if it eats your data !
2232
Of course if it does, let us know and we'll fix the problem so it doesn't
2233
happen to anyone else {sm;:-)}. ::
2235
Copyright (c) 2004 - 2008, Michael Foord & Nicola Larosa
2236
All rights reserved.
2238
Redistribution and use in source and binary forms, with or without
2239
modification, are permitted provided that the following conditions are
2243
* Redistributions of source code must retain the above copyright
2244
notice, this list of conditions and the following disclaimer.
2246
* Redistributions in binary form must reproduce the above
2247
copyright notice, this list of conditions and the following
2248
disclaimer in the documentation and/or other materials provided
2249
with the distribution.
2251
* Neither the name of Michael Foord nor Nicola Larosa
2252
may be used to endorse or promote products derived from this
2253
software without specific prior written permission.
2255
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
2256
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
2257
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
2258
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
2259
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
2260
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
2261
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2262
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2263
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2264
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
2265
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2267
You should also be able to find a copy of this license at : `BSD License`_
2269
.. _BSD License: http://www.voidspace.org.uk/python/license.shtml
2275
Better support for configuration from multiple files, including tracking
2276
*where* the original file came from and writing changes to the correct
2279
Make ``newline`` an option (as well as an attribute) ?
2281
``UTF16`` encoded files, when returned as a list of lines, will have the
2282
BOM at the start of every line. Should this be removed from all but the
2285
Option to set warning type for unicode decode ? (Defaults to strict).
2287
A method to optionally remove uniform indentation from multiline values.
2288
(do as an example of using ``walk`` - along with string-escape)
2290
Should the results dictionary from validate be an ordered dictionary if
2291
`odict <http://www.voidspace.org.uk/python/odict.html>`_ is available ?
2293
Implement some of the sequence methods (which include slicing) from the
2296
Preserve line numbers of values (and possibly the original text of each value).
2304
Please file any bug reports to `Michael Foord`_ or the **ConfigObj**
2307
There is currently no way to specify the encoding of a configspec file.
2309
When using ``copy`` mode for validation, it won't copy ``DEFAULT``
2310
sections. This is so that you *can* use interpolation in configspec
2313
``validate`` doesn't report *extra* values or sections.
2315
You can't have a keyword with the same name as a section (in the same
2316
section). They are both dictionary keys - so they would overlap.
2318
ConfigObj doesn't quote and unquote values if ``list_values=False``.
2319
This means that leading or trailing whitespace in values will be lost when
2320
writing. (Unless you manually quote).
2322
Interpolation checks first the current section, then the 'DEFAULT' subsection
2323
of the current section, before moving on to the current section's parent and
2326
Does it matter that we don't support the ':' divider, which is supported
2327
by ``ConfigParser`` ?
2329
String interpolation and validation don't play well together. When
2330
validation changes type it sets the value. This will correctly fetch the
2331
value using interpolation - but then overwrite the interpolation reference.
2332
If the value is unchanged by validation (it's a string) - but other types
2339
This is an abbreviated changelog showing the major releases up to version 4.
2340
From version 4 it lists all releases and changes.
2343
2008/02/05 - Version 4.5.2
2344
--------------------------
2346
Distribution updated to include version 0.3.2 of validate_. This means that
2347
``None`` as a default value win configspecs works.
2350
2008/02/05 - Version 4.5.1
2351
--------------------------
2353
Distribution updated to include version 0.3.1 of validate_. This means that
2354
Unicode configspecs now work.
2357
2008/02/05 - Version 4.5.0
2358
--------------------------
2360
ConfigObj will now guarantee that files will be written terminated with a
2363
ConfigObj will no longer attempt to import the ``validate`` module, until/unless
2364
you call ``ConfigObj.validate`` with ``preserve_errors=True``. This makes it
2367
New methods ``restore_default`` and ``restore_defaults``. ``restore_default``
2368
resets an entry to its default value (and returns that value). ``restore_defaults``
2369
resets all entries to their default value. It doesn't modify entries without a
2370
default value. You must have validated a ConfigObj (which populates the
2371
``default_values`` dictionary) before calling these methods.
2373
BUGFIX: Proper quoting of keys, values and list values that contain hashes
2374
(when writing). When ``list_values=False``, values containing hashes are
2377
Added the ``reload`` method. This reloads a ConfigObj from file. If the filename
2378
attribute is not set then a ``ReloadError`` (a new exception inheriting from
2379
``IOError``) is raised.
2381
BUGFIX: Files are read in with 'rb' mode, so that native/non-native line endings work!
2383
Minor efficiency improvement in ``unrepr`` mode.
2385
Added missing docstrings for some overidden dictionary methods.
2387
Added the ``reset`` method. This restores a ConfigObj to a freshly created state.
2389
Removed old CHANGELOG file.
2392
2007/02/04 - Version 4.4.0
2393
--------------------------
2395
Official release of 4.4.0
2398
2006/12/17 - Version 4.3.3-alpha4
2399
---------------------------------
2403
Allowed arbitrary indentation in the ``indent_type`` parameter, removed the
2404
``NUM_INDENT_SPACES`` and ``MAX_INTERPOL_DEPTH`` (a leftover) constants,
2405
added indentation tests (including another docutils workaround, sigh), updated
2410
Made the import of ``compiler`` conditional so that ``ConfigObj`` can be used
2411
with `IronPython <http://www.codeplex.com/IronPython>`_.
2414
2006/12/17 - Version 4.3.3-alpha3
2415
---------------------------------
2419
Added a missing ``self.`` in the _handle_comment method and a related test,
2420
per Sourceforge bug #1523975.
2423
2006/12/09 - Version 4.3.3-alpha2
2424
---------------------------------
2428
Changed interpolation search strategy, based on this patch by Robin Munn:
2429
http://sourceforge.net/mailarchive/message.php?msg_id=17125993
2432
2006/12/09 - Version 4.3.3-alpha1
2433
---------------------------------
2437
Added Template-style interpolation, with tests, based on this patch by
2438
Robin Munn: http://sourceforge.net/mailarchive/message.php?msg_id=17125991
2439
(awful archives, bad Sourceforge, bad).
2442
2006/06/04 - Version 4.3.2
2443
--------------------------
2445
Changed error handling, if parsing finds a single error then that error will
2446
be re-raised. That error will still have an ``errors`` and a ``config``
2449
Fixed bug where '\\n' terminated files could be truncated.
2451
Bugfix in ``unrepr`` mode, it couldn't handle '#' in values. (Thanks to
2452
Philippe Normand for the report.)
2454
As a consequence of this fix, ConfigObj doesn't now keep inline comments in
2455
``unrepr`` mode. This is because the parser in the `compiler package`_
2456
doesn't keep comments. {sm;:-)}
2458
Error messages are now more useful. They tell you the number of parsing errors
2459
and the line number of the first error. (In the case of multiple errors.)
2461
Line numbers in exceptions now start at 1, not 0.
2463
Errors in ``unrepr`` mode are now handled the same way as in the normal mode.
2464
The errors stored will be an ``UnreprError``.
2467
2006/04/29 - Version 4.3.1
2468
--------------------------
2470
Added ``validate.py`` back into ``configobj.zip``. (Thanks to Stewart
2473
Updated to `validate.py`_ 0.2.2.
2475
Preserve tuples when calling the ``dict`` method. (Thanks to Gustavo Niemeyer.)
2477
Changed ``__repr__`` to return a string that contains ``ConfigObj({ ... })``.
2479
Change so that an options dictionary isn't modified by passing it to ConfigObj.
2480
(Thanks to Artarious.)
2482
Added ability to handle negative integers in ``unrepr``. (Thanks to Kevin
2486
2006/03/24 - Version 4.3.0
2487
--------------------------
2489
Moved the tests and the CHANGELOG (etc) into a separate file. This has reduced
2490
the size of ``configobj.py`` by about 40%.
2492
Added the ``unrepr`` mode to reading and writing config files. Thanks to Kevin
2493
Dangoor for this suggestion.
2495
Empty values are now valid syntax. They are read as an empty string ``''``.
2496
(``key =``, or ``key = # comment``.)
2498
``validate`` now honours the order of the configspec.
2500
Added the ``copy`` mode to validate. Thanks to Louis Cordier for this
2503
Fixed bug where files written on windows could be given ``'\r\r\n'`` line
2506
Fixed bug where last occurring comment line could be interpreted as the
2507
final comment if the last line isn't terminated.
2509
Fixed bug where nested list values would be flattened when ``write`` is
2510
called. Now sub-lists have a string representation written instead.
2512
Deprecated ``encode`` and ``decode`` methods instead.
2514
You can now pass in a ConfigObj instance as a configspec (remember to read
2515
the configspec file using ``list_values=False``).
2517
Sorted footnotes in the docs.
2520
2006/02/16 - Version 4.2.0
2521
--------------------------
2523
Removed ``BOM_UTF8`` from ``__all__``.
2525
The ``BOM`` attribute has become a boolean. (Defaults to ``False``.) It is
2526
*only* ``True`` for the ``UTF16/UTF8`` encodings.
2528
File like objects no longer need a ``seek`` attribute.
2530
Full unicode support added. New options/attributes ``encoding``,
2531
``default_encoding``.
2533
ConfigObj no longer keeps a reference to file like objects. Instead the
2534
``write`` method takes a file like object as an optional argument. (Which
2535
will be used in preference of the ``filename`` attribute if that exists as
2538
utf16 files decoded to unicode.
2540
If ``BOM`` is ``True``, but no encoding specified, then the utf8 BOM is
2541
written out at the start of the file. (It will normally only be ``True`` if
2542
the utf8 BOM was found when the file was read.)
2544
Thanks to Aaron Bentley for help and testing on the unicode issues.
2546
File paths are *not* converted to absolute paths, relative paths will
2547
remain relative as the ``filename`` attribute.
2549
Fixed bug where ``final_comment`` wasn't returned if ``write`` is returning
2552
Deprecated ``istrue``, replaced it with ``as_bool``.
2554
Added ``as_int`` and ``as_float``.
2557
2005/12/14 - Version 4.1.0
2558
--------------------------
2560
Added ``merge``, a recursive update.
2562
Added ``preserve_errors`` to ``validate`` and the ``flatten_errors``
2565
Thanks to Matthew Brett for suggestions and helping me iron out bugs.
2567
Fixed bug where a config file is *all* comment, the comment will now be
2568
``initial_comment`` rather than ``final_comment``.
2570
Validation no longer done on the 'DEFAULT' section (only in the root level).
2571
This allows interpolation in configspecs.
2573
Also use the new list syntax in validate_ 0.2.1. (For configspecs).
2576
2005/12/02 - Version 4.0.2
2577
--------------------------
2579
Fixed bug in ``create_empty``. Thanks to Paul Jimenez for the report.
2582
2005/11/05 - Version 4.0.1
2583
--------------------------
2585
Fixed bug in ``Section.walk`` when transforming names as well as values.
2587
Added the ``istrue`` method. (Fetches the boolean equivalent of a string
2590
Fixed ``list_values=False`` - they are now only quoted/unquoted if they
2591
are multiline values.
2593
List values are written as ``item, item`` rather than ``item,item``.
2596
2005/10/17 - Version 4.0.0
2597
--------------------------
2599
**ConfigObj 4.0.0 Final**
2601
Fixed bug in ``setdefault``. When creating a new section with setdefault the
2602
reference returned would be to the dictionary passed in *not* to the new
2603
section. Bug fixed and behaviour documented.
2605
Obscure typo/bug fixed in ``write``. Wouldn't have affected anyone though.
2608
2005/09/09 - Version 4.0.0 beta 5
2609
---------------------------------
2611
Removed ``PositionError``.
2613
Allowed quotes around keys as documented.
2615
Fixed bug with commas in comments. (matched as a list value)
2618
2005/09/07 - Version 4.0.0 beta 4
2619
---------------------------------
2621
Fixed bug in ``__delitem__``. Deleting an item no longer deletes the
2622
``inline_comments`` attribute.
2624
Fixed bug in initialising ConfigObj from a ConfigObj.
2626
Changed the mailing list address.
2629
2005/08/28 - Version 4.0.0 beta 3
2630
---------------------------------
2632
Interpolation is switched off before writing out files.
2634
Fixed bug in handling ``StringIO`` instances. (Thanks to report from
2637
Moved the doctests from the ``__init__`` method to a separate function.
2638
(For the sake of IDE calltips).
2641
2005/08/25 - Version 4.0.0 beta 2
2642
---------------------------------
2644
Amendments to *validate.py*.
2646
First public release.
2649
2005/08/21 - Version 4.0.0 beta 1
2650
---------------------------------
2652
Reads nested subsections to any depth.
2656
Simplified options and methods.
2660
Faster, smaller, and better parser.
2662
Validation greatly improved. Includes:
2668
Improved error handling.
2670
Plus lots of other improvements. {sm;:grin:}
2673
2004/05/24 - Version 3.0.0
2674
--------------------------
2676
Several incompatible changes: another major overhaul and change. (Lots of
2677
improvements though).
2679
Added support for standard config files with sections. This has an entirely
2680
new interface: each section is a dictionary of values.
2682
Changed the update method to be called writein: update clashes with a dict
2685
Made various attributes keyword arguments, added several.
2687
Configspecs and orderlists have changed a great deal.
2689
Removed support for adding dictionaries: use update instead.
2691
Now subclasses a new class called caselessDict. This should add various
2692
dictionary methods that could have caused errors before.
2694
It also preserves the original casing of keywords when writing them back out.
2696
Comments are also saved using a ``caselessDict``.
2698
Using a non-string key will now raise a ``TypeError`` rather than converting
2701
Added an exceptions keyword for *much* better handling of errors.
2703
Made ``creatempty=False`` the default.
2705
Now checks indict *and* any keyword args. Keyword args take precedence over
2708
``' ', ':', '=', ','`` and ``'\t'`` are now all valid dividers where the
2709
keyword is unquoted.
2711
ConfigObj now does no type checking against configspec when you set items.
2713
delete and add methods removed (they were unnecessary).
2715
Docs rewritten to include all this gumph and more; actually ConfigObj is
2716
*really* easy to use.
2718
Support for stdout was removed.
2720
A few new methods added.
2722
Charmap is now incorporated into ConfigObj.
2725
2004/03/14 - Version 2.0.0 beta
2726
-------------------------------
2728
Re-written it to subclass dict. My first forays into inheritance and operator
2731
The config object now behaves like a dictionary.
2733
I've completely broken the interface, but I don't think anyone was really
2736
This new version is much more 'classy'. {sm;:wink:}
2738
It will also read straight from/to a filename and completely parse a config
2739
file without you *having* to supply a config spec.
2741
Uses listparse, so can handle nested list items as values.
2743
No longer has getval and setval methods: use normal dictionary methods, or add
2747
2004/01/29 - Version 1.0.5
2748
--------------------------
2750
Version 1.0.5 has a couple of bugfixes as well as a couple of useful additions
2751
over previous versions.
2753
Since 1.0.0 the buildconfig function has been moved into this distribution,
2754
and the methods reset, verify, getval and setval have been added.
2756
A couple of bugs have been fixed.
2762
ConfigObj originated in a set of functions for reading config files in the
2763
`atlantibots <http://www.voidspace.org.uk/atlantibots/>`_ project. The original
2764
functions were written by Rob McNeur.
2773
.. [#] And if you discover any bugs, let us know. We'll fix them quickly.
2775
.. [#] If you specify a filename that doesn't exist, ConfigObj will assume you
2776
are creating a new one. See the *create_empty* and *file_error* options_.
2778
.. [#] They can be byte strings (*ordinary* strings) or Unicode.
2780
.. [#] Except we don't support the RFC822 style line continuations, nor ':' as
2783
.. [#] This is a change in ConfigObj 4.2.0. Note that ConfigObj doesn't call
2784
the seek method of any file like object you pass in. You may want to call
2785
``file_object.seek(0)`` yourself, first.
2787
.. [#] A side effect of this is that it enables you to copy a ConfigObj :
2793
# only copies members
2794
# not attributes/comments
2795
config2 = ConfigObj(config1)
2799
The order of values and sections will not be preserved, though.
2801
.. [#] Other than lists of strings.
2803
.. [#] The exception is if it detects a ``UTF16`` encoded file which it
2804
must decode before parsing.
2806
.. [#] The method signature shows that this method takes
2807
two arguments. The second is the section to be written. This is because the
2808
``write`` method is called recursively.
2810
.. [#] The dict method doesn't actually use the deepcopy mechanism. This means
2811
if you add nested lists (etc) to your ConfigObj, then the dictionary
2812
returned by dict may contain some references. For all *normal* ConfigObjs
2813
it will return a deepcopy.
2815
.. [#] Passing ``(section, key)`` rather than ``(value, key)`` allows you to
2816
change the value by setting ``section[key] = newval``. It also gives you
2817
access to the *rename* method of the section.
2819
.. [#] Minimum required version of *validate.py* 0.2.0 .
2824
Rendering this document with docutils also needs the
2825
textmacros module and the PySrc CSS stuff. See
2826
http://www.voidspace.org.uk/python/firedrop2/textmacros.shtml
2831
<div align="center">
2833
<a href="http://www.python.org">
2834
<img src="images/new_python.gif" width="100" height="103" border="0"
2835
alt="Powered by Python" />
2837
<a href="http://sourceforge.net">
2838
<img src="http://sourceforge.net/sflogo.php?group_id=123265&type=1" width="88" height="31" border="0" alt="SourceForge.net Logo" />
2840
<a href="http://www.opensource.org">
2841
<img src="images/osi-certified-120x100.gif" width="120" height="100" border="0"
2842
alt="Certified Open Source"/>
2846
<a href="http://www.voidspace.org.uk/python/index.shtml">
2847
<img src="images/pythonbanner.gif" width="468" height="60"
2848
alt="Python on Voidspace" border="0" />
2854
.. _listquote: http://www.voidspace.org.uk/python/modules.shtml#listquote
2855
.. _Michael Foord: http://www.voidspace.org.uk/python/weblog/index.shtml
2856
.. _Nicola Larosa: http://www.teknico.net