Function valid_key

Lib/zoneinfo/_tzpath.py:143–148

(fpath)

        pass

    def valid_key(fpath):
        try:
            with open(fpath, "rb") as f:
                return f.read(4) == b"TZif"
        except Exception:  # pragma: nocover
            return False

    for tz_root in TZPATH:
        if not os.path.exists(tz_root):