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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 hit_extend(self, hit_id, assignments, minutes):
 """ Add additional worker assignments or minutes to a HIT. Args: hit_id: A list conaining one hit_id string. assignments: Variable <int> for number of assignments to add. minutes: Variable <int> for number of minutes to add. Returns: A side effect of this function is that the state of a HIT changes on AMT servers. Raises: """


        assert type(hit_id) is list
        assert type(hit_id[0]) is str

        if self.amt_services.extend_hit(hit_id[0], assignments, minutes):
            print "HIT extended."