[issue43387] Enable pydoc to run as background job

Change by digitaldragon : -- versions: +Python 3.10, Python 3.6, Python 3.7, Python 3.8 ___ Python tracker <https://bugs.python.org/issue43387> ___ ___ Python-bug

[issue43387] Enable pydoc to run as background job

New submission from digitaldragon : The pydoc tool can serve a website for browsing the docs interactively with the -p or -b option. While serving, it enters a simple command line interface: Server commands: [b]rowser, [q]uit server> Because it is reading from stdin, it is not possible