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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_lastfunction_header(self, header, default_return_value=None):
 """Returns a specific header from the last API call This will return None if the header is not present :param header: (required) The name of the header you want to get the value of Most useful for the following header information: x-rate-limit-limit, x-rate-limit-remaining, x-rate-limit-class, x-rate-limit-reset """

        if self._last_call is None:
            raise TwythonError('This function must be called after an API call. \
                               It delivers header information.')

        return self._last_call['headers'].get(header, default_return_value)