1.0 1.0 =self.klist[-1]: return self.vlist[-1] return self.i(x) def _i(self,x): lastk=self.klist[0] for k in self.klist[1:]: if lastk< xx : xmin=x if xmaxy : ymin=y if ymax 1.0 977 1.0 236 Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Python Courier New 36.0 Python 320.0