code: def save_list(self, list_name, emails):
          
          data = {'list': list_name,
                  'emails': ','.join(emails) if isinstance(emails, list) else emails}
          return self.api_post('list', data)
docs: Upload a list. The list import job is queued and will happen shortly after the API request.
          http://docs.sailthru.com/api/list
          @param list: list name
          @param emails: List of email values or comma separated string