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47
DEPRECATED_PARAMETER = "A deprecated parameter marker."
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48
zero_seven = "%s was deprecated in version 0.7."
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49
zero_eight = "%s was deprecated in version 0.8."
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zero_nine = "%s was deprecated in version 0.9."
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zero_ten = "%s was deprecated in version 0.10."
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zero_eleven = "%s was deprecated in version 0.11."
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zero_twelve = "%s was deprecated in version 0.12."
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zero_thirteen = "%s was deprecated in version 0.13."
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zero_fourteen = "%s was deprecated in version 0.14."
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zero_fifteen = "%s was deprecated in version 0.15."
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zero_sixteen = "%s was deprecated in version 0.16."
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zero_seventeen = "%s was deprecated in version 0.17."
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zero_eighteen = "%s was deprecated in version 0.18."
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zero_ninety = "%s was deprecated in version 0.90."
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zero_ninetyone = "%s was deprecated in version 0.91."
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64
def set_warning_method(method):
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75
# add that on top of the primitives, once we have all three written
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def deprecation_string(a_callable, deprecation_version):
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"""Generate an automatic deprecation string for a_callable.
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:param a_callable: The callable to substitute into deprecation_version.
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:param deprecation_version: A deprecation format warning string. This should
84
have a single %s operator in it. a_callable will be turned into a nice
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python symbol and then substituted into deprecation_version.
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if getattr(a_callable, 'im_class', None) is None:
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symbol = "%s.%s" % (a_callable.__module__,
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symbol = "%s.%s.%s" % (a_callable.im_class.__module__,
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a_callable.im_class.__name__,
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return deprecation_version % symbol
53
98
def deprecated_function(deprecation_version):
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99
"""Decorate a function so that use of it will trigger a warning."""
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104
def decorated_function(*args, **kwargs):
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105
"""This is the decorated function."""
61
symbol = "%s.%s" % (callable.__module__,
64
warn(deprecation_version % symbol, DeprecationWarning, stacklevel=2)
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warn(deprecation_string(callable, deprecation_version),
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DeprecationWarning, stacklevel=2)
65
108
return callable(*args, **kwargs)
66
109
_populate_decorated(callable, deprecation_version, "function",
67
110
decorated_function)
140
192
decorated_callable.__module__ = callable.__module__
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193
decorated_callable.__name__ = callable.__name__
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194
decorated_callable.is_deprecated = True
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def _dict_deprecation_wrapper(wrapped_method):
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"""Returns a closure that emits a warning and calls the superclass"""
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def cb(dep_dict, *args, **kwargs):
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msg = 'access to %s' % (dep_dict._variable_name, )
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msg = dep_dict._deprecation_version % (msg,)
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msg += ' ' + dep_dict._advice
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warn(msg, DeprecationWarning, stacklevel=2)
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return wrapped_method(dep_dict, *args, **kwargs)
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class DeprecatedDict(dict):
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"""A dictionary that complains when read or written."""
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"""Create a dict that warns when read or modified.
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:param deprecation_version: something like zero_nine
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:param initial_value: The contents of the dict
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:param variable_name: This allows better warnings to be printed
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:param advice: String of advice on what callers should do instead
226
of using this variable.
228
self._deprecation_version = deprecation_version
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self._variable_name = variable_name
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self._advice = advice
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dict.__init__(self, initial_value)
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# This isn't every possible method but it should trap anyone using the
234
# dict -- add more if desired
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__len__ = _dict_deprecation_wrapper(dict.__len__)
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__getitem__ = _dict_deprecation_wrapper(dict.__getitem__)
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__setitem__ = _dict_deprecation_wrapper(dict.__setitem__)
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__delitem__ = _dict_deprecation_wrapper(dict.__delitem__)
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keys = _dict_deprecation_wrapper(dict.keys)
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__contains__ = _dict_deprecation_wrapper(dict.__contains__)
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def deprecated_list(deprecation_version, variable_name,
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initial_value, extra=None):
245
"""Create a list that warns when modified
247
:param deprecation_version: something like zero_nine
248
:param initial_value: The contents of the list
249
:param variable_name: This allows better warnings to be printed
250
:param extra: Extra info to print when printing a warning
253
subst_text = 'Modifying %s' % (variable_name,)
254
msg = deprecation_version % (subst_text,)
258
class _DeprecatedList(list):
259
__doc__ = list.__doc__ + msg
263
def _warn_deprecated(self, func, *args, **kwargs):
264
warn(msg, DeprecationWarning, stacklevel=3)
265
return func(self, *args, **kwargs)
267
def append(self, obj):
268
"""appending to %s is deprecated""" % (variable_name,)
269
return self._warn_deprecated(list.append, obj)
271
def insert(self, index, obj):
272
"""inserting to %s is deprecated""" % (variable_name,)
273
return self._warn_deprecated(list.insert, index, obj)
275
def extend(self, iterable):
276
"""extending %s is deprecated""" % (variable_name,)
277
return self._warn_deprecated(list.extend, iterable)
279
def remove(self, value):
280
"""removing from %s is deprecated""" % (variable_name,)
281
return self._warn_deprecated(list.remove, value)
283
def pop(self, index=None):
284
"""pop'ing from from %s is deprecated""" % (variable_name,)
286
return self._warn_deprecated(list.pop, index)
289
return self._warn_deprecated(list.pop)
291
return _DeprecatedList(initial_value)