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        "author": "Marcel Hellkamp",
        "author_email": "marc@gsites.de",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 4 - Beta",
            "Intended Audience :: Developers",
            "License :: OSI Approved :: MIT License",
            "Programming Language :: Python :: 2.5",
            "Programming Language :: Python :: 2.6",
            "Programming Language :: Python :: 2.7",
            "Programming Language :: Python :: 3",
            "Programming Language :: Python :: 3.2",
            "Programming Language :: Python :: 3.3",
            "Programming Language :: Python :: 3.4"
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        "description": "Contexter: A better contextlib\n===============================================================================\n\nContexter is a full replacement of the contextlib_ standard library module. It comes with more features, a nicer API and full support for Python 2.5 up to 3.x from a single source file.\n\nTo keep it short: Contexter allows you to nest and stack context managers in an easy and intuitive way.\n\nEnough talk, let's see an example:\n\n.. code:: python\n\n    ''' Copy the content of one file to another\n         and protect everything with a lock. '''\n\n    with Contexter(lock) as ctx:\n        in_file  = ctx << open('a.txt')\n        out_file = ctx << open('b.txt', 'w')\n        out_file.write(in_file.read())\n\nLook at that. It's beautiful, isn't it? Let me explain: You call ``Contexter()`` with any number of context managers as arguments and later attach additional managers with the neat ``value = ctx << thing`` syntax. That's it. Only one level of indentation, no matter how many managers you need.\n\nJust for comparison:\n\n.. code:: python\n\n    # Python 2.5 and 2.6\n    with lock:\n        with open('a.txt') as in_file:\n            with open('b.txt', 'w') as out_file:\n                out_file.write(in_file.read())\n\n    # Starting with Python 2.7 and 3.2\n    with lock, open('a.txt') as in_file, open('b.txt', 'w') as out_file:\n        out_file.write(in_file.read())\n\n    # Deprecated since Python 2.7 and 3.2\n    with contextlib.nested(lock, open('a.txt'), open('b.txt', 'w')) as values:\n        in_file, out_file = values\n        out_file.write(in_file.read())\n\n    # Since Python 3.3 (not backported to 2.7)\n    with contextlib.ExitStack() as stack:\n        stack.enter_context(lock)\n        in_file  = stack.enter_context(open('a.txt'))\n        out_file = stack.enter_context(open('b.txt', 'w'))\n        out_file.write(in_file.read())\n\n\nReplacing `contextlib.nested`_\n-------------------------------------------------------------------------------\n\nYou can use ``Contexter(*managers)`` as a drop-in replacement for ``contextlib.nested(*managers)``, just without the `confusing error prone quirks mentioned in the official documentation <http://docs.python.org/3/library/contextlib.html>`_.\n\nReplacing `contextlib.closing`_\n-------------------------------------------------------------------------------\n\nJust forget about it. Contexter turns close-able objects into context managers automatically.\n\nReplacing `contextlib.ExitStack`_\n-------------------------------------------------------------------------------\n\nContexter offeres everything ``contextlib.ExitStack`` does (and more). If you want a drop-in replacement that also works for Python 2.x and 3.2, you can use our backported ``ExitStack``, a subclass of ``Contexter`` that is API compatible to the contextlib variant.\n\nReplacing everything else from contextlib\n-------------------------------------------------------------------------------\n\nIf you really want to stick with the standard API, you can. Contexter implements all public APIs from contextlib and backports new features as soon as they are introduced.\n\n\nMore examples:\n-------------------------------------------------------------------------------\n\nContexter keeps track of the results of all invoked context managers. You can access the results later and don't have to unpack them all at the beginning.\n\n.. code:: python\n\n    with Contexter(open('a.txt'), open('b.txt', 'w')) as ctx:\n        in_file, out_file = ctx.values()\n        assert ctx.value(0) is in_file\n        assert ctx[0] is in_file\n        assert ctx[0:2] == [in_file, out_file]\n        assert len(ctx) == 2\n\nIf you don't like the ``<<`` syntax, there is a method that does the same.\n\n.. code:: python\n\n    with Contexter() as ctx:\n        in_file = ctx << open('a.txt')\n        out_file = ctx.append(open('b.txt', 'w'))\n\nContexter contexts are nestable. Each level of nesting maintains its own stack of context managers and result values. This allows you to control the lifetime of contexts very precisely.\n\n.. code:: python\n\n    with Contexter() as ctx:\n        out_file = ctx << open('b.txt', 'w')\n\n        with ctx:\n            in_file = ctx << open('a.txt')\n            copy_data(in_file, out_file)\n\n        assert in_file.closed == True\n        assert out_file.closed == False\n\nLinks\n-------------------------------------------------------------------------------\n\n.. target-notes::\n\n.. _contextlib: http://docs.python.org/3/library/contextlib.html\n.. _contextlib.nested: http://docs.python.org/2/library/contextlib.html#contextlib.nested\n.. _contextlib.closing: http://docs.python.org/3/library/contextlib.html#contextlib.closing\n.. _contextlib.ExitStack: http://docs.python.org/3/library/contextlib.html#contextlib.ExitStack",
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