def add(self, elem, replace=False):
        """Add a requirement.

        :param elem: a string or :class:`Requirement` instance.
        :param replace: if `True`, packages in the set with the same name will
            be removed first.
        """
        if isinstance(elem, text_type):
            elem = Requirement.coerce(elem)
        if replace and elem in self:
            self.remove(elem)
        super(Requirements, self).add(elem)
def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("day", help="The day of the results, with format yyyymmdd")
    args = parser.parse_args()
    install_autopkgtest_results_formatter()
    with tempfile.TemporaryDirectory(dir=os.environ.get("HOME")) as temp_dir:
        clone_results_repo(temp_dir)
        format_results(temp_dir, ACTIVE_DISTROS, args.day)
        commit_and_push(temp_dir, args.day)