File: README.rst

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contextlib2 0.5.5-1
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contextlib2 is a backport of the `standard library's contextlib
module <https://docs.python.org/3.5/library/contextlib.html>`_ to
earlier Python versions.

It also serves as a real world proving ground for possible future
enhancements to the standard library version.

Development
-----------

contextlib2 has no runtime dependencies, but requires ``unittest2`` for testing
on Python 2.x, as well as ``setuptools`` and ``wheel`` to generate universal
wheel archives.

Local testing is just a matter of running ``python test_contextlib2.py``.

You can test against multiple versions of Python with
`tox <https://tox.testrun.org/>`_::

    pip install tox
    tox

Versions currently tested in both tox and Travis CI are:

* CPython 2.6
* CPython 2.7
* CPython 3.4
* CPython 3.5
* CPython 3.6
* CPython 3.7 (CPython development branch)
* PyPy

Versions currently tested only in tox are:

* PyPy3

This is due to an exception chaining compatibility bug that was fixed in
the PyPy3 5.5 alpha release, while the version on Travis CI (as of April 2017)
is still the older PyPy3 2.4.0 release.