What's the last version that runs with python 3.8 ?

[AmjadHD]

A quick glance at the source code I see usage of the pipe operator (T1 | T2) which isn't supported in 3.8.

[florisla]

It seems the linters are being run with 3.7, 3.8, 3.9, 3.10.

See https://github.com/gitpython-developers/GitPython/blob/main/.github/workflows/pythonpackage.yml .