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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 params(self):
 """Current interpolation parameter dictionary"""

        par = {"radius": self.radius,
               "sphere_index": self.sphere_index,
               "pha_offset": self.pha_offset,
               "center": [self.posx_offset, self.posy_offset]
               }
        return par