contextlib2 is a backport of the standard library's contextlib module to earlier Python versions.
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Latest commit 68069e3 Apr 25, 2017

README.rst

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contextlib2 is a backport of the standard library's contextlib module 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:

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.