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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 get_value(self, series, key):
 """ we always want to get an index value, never a value """

        if not is_scalar(key):
            raise InvalidIndexError

        k = com.values_from_object(key)
        loc = self.get_loc(k)
        new_values = com.values_from_object(series)[loc]

        return new_values