def read_member(self):
        """Returns a file-like object to read one member from the gzip file.
        """
        if self._member_lock is False:
            self._member_lock = True

        if self._new_member:
            try:
                # Read one byte to move to the next member
                BaseGzipFile._read(self, 1)
                assert self._new_member is False
            except EOFError:
                return None
        
        return self
Returns a file-like object to read one member from the gzip file.