def clean_semver(cls, version_spec):
        return re.sub(r"([<>=~])\s+?v?", "\\1", version_spec, re.IGNORECASE)
def _check_sigint_gate_is_correct(self):
        assert (
            self._threads_ignoring_sigint >= 0
        ), "This should never happen, someone must have modified the counter outside of SignalHandler."