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Starting with bzrlib
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====================
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When using bzrlib within the ``bzr`` program (for instance as a bzr
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plugin), bzrlib's global state is already available for use.
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To use bzrlib outside of ``bzr`` some global state needs to be setup.
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bzrlib needs ways to handle user input, passwords, a place to emit
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progress bars, logging setup appropriately for your program. The easiest
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way to set all this up in the same fashion ``bzr`` does is to call
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``bzrlib.initialize``.
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This returns a context manager within which bzrlib functions will work
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correctly. See the pydoc for ``bzrlib.initialize`` for more information.
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(You can get away without entering the context manager, because the setup
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work happens directly from ``initialize``.)
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In Python 2.4 the ``with`` keyword is not supported and
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so you need to use the context manager manually::
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# This sets up your ~/.bzr.log, ui factory and so on and so forth. It is
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# not safe to use as a doctest.
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library_state = bzrlib.initialize()
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library_state.__enter__()
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library_state.__exit__(None, None, None)
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Before doing anything else with bzrlib, you should run `bzrlib.initialize`
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which sets up some global state.
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Running bzr commands
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This gives us a WorkingTree object, which has various methods spread over
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itself, and its parent classes MutableTree and Tree - it's worth having a
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itself, and its parent classes MutableTree and Tree - its worth having a
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look through these three files (workingtree.py, mutabletree.py and tree.py)
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to see which methods are available.