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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 answer_approval(self, issue_id_or_key, approval_id, decision):
 """ Answer a pending approval :param issue_id_or_key: str :param approval_id: str :param decision: str :return: """

        url = 'rest/servicedeskapi/request/{0}/approval/{1}'.format(issue_id_or_key, approval_id)
        data = {'decision': decision}

        return self.post(url, headers=self.experimental_headers, data=data)