should the shebang be removed?

[sandy-lcq]

certs.py have shebang "#!/usr/bin/env python", on some host, like fedora31 docker image,
only python3 installed, and no python link to python3, in this case, maybe error like "python: command not found" will repored when run certs.py .

[sandy-lcq]

duplicate pypa/pip#7959