RFC 8601 Authentication Results Header manipulation for Python3

 Python3 module to create and parse RFC 8601 Authentication Results headers.
 .
 The module provides a class for creating and parsing RFC compliant headers
 for use in Python3 applications. It supports all currently registered
 extensions in addition to the core RFC 8601 types.
 .
 https://tools.ietf.org/rfc/rfc8601.txt