def ask(message, options):
    # type: (str, Iterable[str]) -> str
    """Ask the message interactively, with the given possible responses"""
    while 1:
        _check_no_input(message)
        response = input(message)
        response = response.strip().lower()
        if response not in options:
            print(
                'Your response ({!r}) was not one of the expected responses: '
                '{}'.format(response, ', '.join(options))
            )
        else:
            return response
Ask the message interactively, with the given possible responses
product/gradle-plugin/src/main/python/pip/_internal/utils/misc.py