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 format_results(dest_dir, distros, day):
    subprocess.check_call(
        [
            "/snap/bin/autopkgtest-results-formatter",
            "--destination",
            dest_dir,
            "--distros",
            *distros,
            "--day",
            day,
        ]
    )