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ASN.1 types and codecs (BER, CER, DER) implementation in Python programming language.
A collection of various ASN.1-based protocols data structures is supplied in a dedicated Python package.
Project moved to GitHub: https://github.com/etingof/pyasn1
OpenOPC for Python is an easy to use OPC (OLE for Process Control) library for use with the Python programming language. The project includes a Windows gateway service allowing non-Windows clients to also access OPC-DA calls.