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.
contextlib2 currently has no dependencies.
Local testing is currently just a matter of running
You can test against multiple versions of Python with tox):
pip install tox tox
CI is set up in Codeship to run against PRs and commits.