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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 __enableProxy(self):
 """ Set the required environment variables to enable the use of hoverfly as a proxy. """

        os.environ[
            "HTTP_PROXY"] = self.httpProxy()
        os.environ[
            "HTTPS_PROXY"] = self.httpsProxy()

        os.environ["REQUESTS_CA_BUNDLE"] = os.path.join(
            os.path.dirname(
                os.path.abspath(__file__)),
            "cert.pem")