Python-snap7 is a pure Python S7 communication library for interfacing with Siemens S7 PLCs.

Python-snap7 is tested with Python 3.10+, on Windows, Linux and OS X.

The full documentation is available on Read The Docs.

Version 3.0 is a major release that rewrites python-snap7 as a pure Python implementation. The C snap7 library is no longer required.

This release may contain breaking changes. If you experience issues, you can pin to the last pre-3.0 release:

$ pip install "python-snap7<3"

The latest stable pre-3.0 release is version 2.1.0.

Install using pip:

$ pip install python-snap7

No native libraries or platform-specific dependencies are required - python-snap7 is a pure Python package that works on all platforms.