Method _tracer

Python/Turtle.py:1904–1905

dummy method - to be overwritten by child class

(self, a=None, b=None)

    def speed(self, s=0):
        """dummy method - to be overwritten by child class"""
    def _tracer(self, a=None, b=None):
        """dummy method - to be overwritten by child class"""
    def _delay(self, n=None):
        """dummy method - to be overwritten by child class"""