Copy paste the following code into your Python Editor to play the game. Feel free to make changes to the game as you wish. Note that you will need to install the freegames module to make this work.
"""Snake, classic arcade game. Exercises 1. How do you make the snake faster or slower? 2. How can you make the snake go around the edges? 3. How would you move the food? 4. Change the snake to respond to mouse clicks. """ from random import randrange from turtle import * from freegames import square, vector food = vector(0, 0) snake = [vector(10, 0)] aim = vector(0, -10) def change(x, y): #Change snake direction. aim.x = x aim.y = y def inside(head): #Return True if head inside boundaries. return -200 < head.x < 190 and -200 < head.y < 190 def move(): #Move snake forward one segment. head = snake[-1].copy() head.move(aim) if not inside(head) or head in snake: square(head.x, head.y, 9, 'red') update() return snake.append(head) if head == food: print('Snake:', len(snake)) food.x = randrange(-15, 15) * 10 food.y = randrange(-15, 15) * 10 else: snake.pop(0) clear() for body in snake: square(body.x, body.y, 9, 'black') square(food.x, food.y, 9, 'green') update() ontimer(move, 100) setup(420, 420, 370, 0) hideturtle() tracer(False) listen() onkey(lambda: change(10, 0), 'Right') onkey(lambda: change(-10, 0), 'Left') onkey(lambda: change(0, 10), 'Up') onkey(lambda: change(0, -10), 'Down') move() done()