How to create a new package in git ?

[Jean Baptiste Favre <debian@jbfavre.org>]

Hello,
Looking to help to package Frescobaldi 3.2 release, which includes 
Python 3.10 compatibility fixes, I figured out 3.2 release introduces a 
new dependency against qpageview [1] which is currently not packaged in 
Debian.
I looked around for documentation to remember how to bootstrap a new 
Python package, and only found the Python-team policy [2].
Unfortunatly, it doesn't explain how to properly setup a new package, 
and I can't remember how it previously did :(

Any help will be appreciated,
Best,
Jean Baptiste

[1]: https://github.com/frescobaldi/qpageview
[2]: 
https://salsa.debian.org/python-team/tools/python-modules/-/blob/master/policy.rst