def _tracer(self, flag=None, delay=None):
        return self.screen.tracer(flag, delay)
Callback function for the collide() method.
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/site-packages/turtle.py/RawTurtle._tracer--crossover with--dataset/ETHPy150Open pybrain/pybrain/pybrain/rl/environments/ode/environment.py/ODEEnvironment._near_callback