def coerce(cls, string):
        """Create a :class:`Requirement` object from a given package spec."""
        match = re.match(cls.spec_regex, string)
        if not match:
            raise InvalidRequirementSpecError("could not parse requirement")
        package = match.group(1)
        if all(match.group(2, 3)):
            version = "".join(match.group(2, 3))
        else:
            version = None
        return cls(package, version)
def reset(cls):
        cls.info = [
            [
                "Keyboard Control:",
                "  auto repeat:  on    key click percent:  0    LED mask:  00000002",
                "  XKB indicators:",
                "    00: Caps Lock:   off    01: Num Lock:    on     02: Scroll Lock: off",
                "    03: Compose:     off    04: Kana:        off    05: Sleep:       off",
            ],
            [
                "Keyboard Control:",
                "  auto repeat:  on    key click percent:  0    LED mask:  00000002",
                "  XKB indicators:",
                "    00: Caps Lock:   on     01: Num Lock:    on     02: Scroll Lock: off",
                "    03: Compose:     off    04: Kana:        off    05: Sleep:       off",
            ],
        ]
        cls.index = 0
        cls.is_error = False