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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def receive_message(self):
 """Receive a message from the file."""

        with self.lock:
            assert self.can_receive_messages()
            message_type = self._read_message_type(self._file)
            message = message_type(self._file, self)
            self._message_received(message)