"Python for Kids" (by Jason R. Briggs), chapter 11 - drawing circles and squares

turtle_madness.py

import turtle
import random

t = turtle.Pen()


def my_circle(red, green, blue):
    t.color(red, green, blue)
    t.begin_fill()
    t.circle(15)
    t.end_fill()


def my_square(side):
    for x in range(0, 4):
        t.forward(side)
        t.left(90)


t.speed(10)
#
# while True:
#     my_square(30)
#     my_circle(random.uniform(0, 1), random.uniform(0, 1), random.uniform(0, 1))
#     t.up()
#     t.forward(35)
#     t.down()
#
while True:
    my_square(random.uniform(0, 250))