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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 diff(self):
 """The Difference between a PDA and a DFA"""

        self.mmb.complement(self.alphabet)
        self.mmb.minimize()
        print 'start intersection'
        self.mmc = self._intesect()
        print 'end intersection'
        return self.mmc