python3-hpack 3.0.0-4 (amd64 binary) in ubuntu focal

 This module contains a pure-Python HTTP/2 header encoding (HPACK) logic
 for use in Python programs that implement HTTP/2. It also contains a
 compatibility layer that automatically enables the use of nghttp2 if
 it’s available.
 .
 This is the Python 3 version of the package.