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.

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 development branch)
• PyPy

tox also has a PyPy3 configuration, but it is not configured in Travis due to a known incompatibility.

To install several of the relevant runtimes on Fedora 23:

sudo dnf install python python3 pypy pypy3
sudo dnf copr enable -y mstuchli/Python3.5
sudo dnf install python35-python3