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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 as_frames(self, from_frame, to_frame='world'):
 """Return a shallow copy of this rigid transform with just the frames changed. Parameters from_frame : :obj:`str` The new from_frame. to_frame : :obj:`str` The new to_frame. Returns ------- :obj:`RigidTransform` The RigidTransform with new frames. """

        return RigidTransform(self.rotation, self.translation, from_frame, to_frame)