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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_tuple_end(self, extra_end_rules=None):
 """Are we at the end of a tuple?"""

        if self.stream.current.type in ('variable_end', 'block_end', 'rparen'):
            return True
        elif extra_end_rules is not None:
            return self.stream.current.test_any(extra_end_rules)
        return False