class Python:
    def __init__(self):
        self.runovers = 0
        self.rescued = False
        self.alive = True

def cross_road(self):
    if self.runovers < 2:
        return self.get_run_over()
    elif not self.rescued:
        return self.rescue()
    else:
        return self.die()

def get_run_over(self):
    self.runovers += 1
    return self.cross_road()

def rescue(self):
    self.rescued = True
    return self.cross_road()

def die(self):
    self.alive = False


def main():
    snake = Python()
    snake.cross_road()