Mini Shell

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import re
import sys

try:
    from pip._internal.cli.main import main
except ImportError:
    try:
        from pip._internal.main import main
    except ImportError:
        try:
            # If the user has downgraded pip, the above import will fail.
            # Let's try older methods of invoking it:

            # pip 19 uses this
            from pip._internal import main
        except ImportError:
            # older pip versions use this
            from pip import main

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
    sys.exit(main())