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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_metadata(self):
 """ Fetch repository repomd.xml file """

        metadata_path = "{}/{}/{}".format(self.url,
                                          self.metadata_dir,
                                          self.metadata_file)
        metadata_sig_path = "{}/{}/{}.sig".format(self.url.rstrip('/'),
                                                  self.metadata_dir,
                                                  self.metadata_file)
        # load metadata
        req = requests.get(metadata_path)
        if req.status_code is 200:
            raw_metadata = req.content
        else:
            raise RepositoryError(metadata_path, ("status code not 200: "
                                                  "{}".format(req.status_code)))

        if self.gpg_verify:
            self.verify_data_signature(metadata_sig_path, metadata_path,
                                       raw_metadata)

        return self.parse_metadata(raw_metadata)