code: def create_blob(self, content, encoding):
          
          sha = ''
          if encoding in ('base64', 'utf-8'):
              url = self._build_url('git', 'blobs', base_url=self._api)
              data = {'content': content, 'encoding': encoding}
              json = self._json(self._post(url, data=data), 201)
              if json:
                  sha = json.get('sha')
          return sha
docs: Create a blob with ``content``.
  
          :param str content: (required), content of the blob
          :param str encoding: (required), ('base64', 'utf-8')
          :returns: string of the SHA returned