Method speed

Lib/turtle.py:2071–2072

dummy method - to be overwritten by child class

(self, s=0)

## three dummy methods to be implemented by child class:

    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):