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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 append(self, frame_p):
 """ Add frame to the end of the message, i.e. after all other frames. Message takes ownership of frame, will destroy it when message is sent. Returns 0 on success. Deprecates zmsg_add, which did not nullify the caller's frame reference. """

        return lib.zmsg_append(self._as_parameter_, byref(zframe_p.from_param(frame_p)))