code: def artist_update(self, artist_id, name=None, other_names_comma=None,
                        group_name=None, url_string=None, body=None):
          
          params = {
              'artist[name]': name,
              'artist[other_names_comma]': other_names_comma,
              'artist[group_name]': group_name,
              'artist[url_string]': url_string,
              'artist[body]': body
              }
          return self .get('artists/{0}.json'.format(artist_id), params,
                           method='PUT', auth=True)
docs: Function to update artists (Requires login) (UNTESTED).
  
          Parameters:
              artist_id (str):
              name (str): Artist name.
              other_names_comma (str): List of alternative names for this
                                       artist, comma delimited.
              group_name (str): The name of the group this artist belongs to.
              url_string (str): List of URLs associated with this artist,
                                whitespace or newline delimited.
              body (str): DText that will be used to create/update a wiki entry
                          at the same time.