Binary package “python3-sphinxcontrib.apidoc” in ubuntu focal

Sphinx extension for running 'sphinx-apidoc' on each build - Python 3.x

 sphinx-apidoc is a tool for automatic generation of Sphinx sources that, using
 the autodoc sphinx_autodoc extension, documents a whole package in the style
 of other automatic API documentation tools. sphinx-apidoc does not actually
 build documentation - rather it simply generates it. As a result, it must be
 run before sphinx-build.
 .
 This package contains the Python 3.x module.