python-snap7 is a Python wrapper for the Snap7 library. Snap7 i san open source, 32/64 bit, multi-platform Ethernet communication suite for interfacing natively with Siemens S7 PLCs.
Python-snap7 is developer for snap7 1.1.0 and Python2.7. It is tested on Windows (8.1 64 bit) and Linux, but it may work on other operating systems. Python 2.6 and Python 3+ may work, but are not fully tested yet.
The project development is centralized on github.