regex is an alternative to the re package in the Python standard library. It is
intended to act as a drop in replacement, and one day to replace re. regex is
supported on Python v2.5 to v2.7 and v3.1 to v3.4.
For a full list of features see Python2/Features.rst or Python3/Features.rst.
To build and install regex for your default Python run
python setup.py install
To install regex for a specific version run setup.py with that interpreter, e.g.
python3.1 setup.py install