def getModificationTime(self):
        """
        Retrieve this file's last modification time.  This is the time of
        modification recorded in the zipfile.

        @return: a number of seconds since the epoch.
        """
        pathInArchive = _coerceToFilesystemEncoding("", self.pathInArchive)
        return time.mktime(
            self.archive.zipfile.NameToInfo[pathInArchive].date_time
            + (0, 0, 0))

        Retrieve this file's last modification time.  This is the time of
        modification recorded in the zipfile.

        @return: a number of seconds since the epoch.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/zippath.py