def release(self, key: str, callback: Callable[[Any, Any], None]):
        """Releases callback from key changes"""
        try:
            self._callbacks[key].remove(callback)
        except (KeyError, ValueError):
            pass
def release ( self , key : str , callback : Callable [ [ Any , Any ] , None ] ) : try : self . _callbacks [ key ] . remove ( callback ) except ( KeyError , ValueError ) : pass
Releases callback from key changes