(self)
Perform a TurtleScreen update.
Perform a TurtleScreen update.
Perform a TurtleScreen update .
def update(self):
        """Perform a TurtleScreen update.
        """
        tracing = self._tracing
        self._tracing = True
        for t in self.turtles():
            t._update_data()
            t._drawturtle()
        self._tracing = tracing
        self._update()
def update ( self ) : tracing = self . _tracing self . _tracing = True for t in self . turtles ( ) : t . _update_data ( ) t . _drawturtle ( ) self . _tracing = tracing self . _update ( )