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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 pprint(self, imports=None, prefix="\n ",unknown_value='<?>', qualify=False, separator=""):
 """ Same as Parameterized.pprint, except that X.classname(Y is replaced with X.classname.instance(Y """

        r = Parameterized.pprint(self,imports,prefix,
                                 unknown_value=unknown_value,
                                 qualify=qualify,separator=separator)
        classname=self.__class__.__name__
        return r.replace(".%s("%classname,".%s.instance("%classname)