import turtle
import random
num = 1
w = turtle.Screen()
turtle.st()

def do_something(turtle, x,y):
  r = random.randint(0, 255)
  g = random.randint(0, 255)
  b = random.randint(0, 255)
  turtle.color((r,g,b))
  turtle.goto(x,y)
def sizing():
  global num
  num+=1
  turtle.pensize(num % 8)
w.onclick(do_something)
w.onkey(sizing, 's')
w.listen()
w.mainloop()



tommy = turtle.Turtle()
tommy.shape("turtle")
tommy.speed(0)