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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 pop(self):
 """Pops the data stack, returning the value."""

        try:
            return self.data_stack.pop()
        except errors.MachineError as e:
            raise errors.MachineError("%s: At index %d in code: %s" %
                    (e, self.instruction_pointer, self.code_string))