Binary package “python3-funcsigs” in ubuntu focal

function signatures from PEP362 - Python 3.x

 funcsigs is a backport of the PEP 362 function signature features from Python
 3.3's inspect module. The backport is compatible with Python 2.6, 2.7 as well
 as 3.2 and up.
 .
 This package contains the Python 3.x module.