Method _update

Python/Turtle.py:2552–2568

Perform a Turtle-data update.

(self)

                                  self._pencolor, self._pensize)

    def _update(self):
        """Perform a Turtle-data update.
        """
        screen = self.screen
        if screen._tracing == 0:
            return
        elif screen._tracing == 1:
            self._update_data()
            self._drawturtle()
            screen._update()                  # TurtleScreenBase
            screen._delay(screen._delayvalue) # TurtleScreenBase
        else:
            self._update_data()
            if screen._updatecounter == 0:
                for t in screen.turtles():
                    t._drawturtle()
                screen._update()

    def _tracer(self, flag=None, delay=None):
        """Turns turtle animation on/off and set delay for update drawings.