Method down

Snake Game Using Turtle/snake.py:59–62

Turns the snake's head downwards, preventing it from reversing.

(self)

            self.head.setheading(UP)

    def down(self):
        """Turns the snake's head downwards, preventing it from reversing."""
        if self.head.heading() != UP:
            self.head.setheading(DOWN)

    def left(self):
        """Turns the snake's head to the left, preventing it from reversing."""