Since the version 2.7.0, there is a bug to the get_repo_permission function.

When I try to get the permissions from a team to a repository by using the name and not the repository object I received None.

repo_permissions = team.get_repo_permission("orga/repo")

The issue is with this fix #3263 at this line https://github.com/PyGithub/PyGithub/blob/main/github/Team.py#L319

Now the '/' is encoded but it should not for the fullname which has organization + repository name.

I checked the tests as well and it seems only the interface with the repository object is tested (https://github.com/PyGithub/PyGithub/blob/main/tests/Team.py#L169).

Thanks