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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 is_birthday(self, dt=None):
 """ Check if its the birthday. Compares the date/month values of the two dates. :rtype: bool """

        if dt is None:
            dt = Date.today()

        instance = dt1 = self.__class__(dt.year, dt.month, dt.day)

        return (self.month, self.day) == (instance.month, instance.day)