'''
    DS2000
    Spring 2020
    Sample code -- graphics with Python Turtle
    (also a demo of a void function, and of using random)

    January 17, 2020
'''

import turtle
import random

def draw_square(color, size):
    ''' Function draw_square
        Input: color (string), size (int)
        Returns: nothing
        Does: Draws a square at a random location. It creates
              a turtle (Rafael), and calls functions to move the
              turtle around the screen.
    '''
    x_coord = random.randint(-100, 100)
    y_coord = random.randint(-100, 100)

    rafael = turtle.Turtle()
    rafael.penup()
    rafael.goto(x_coord, y_coord)

    rafael.color(color)
    rafael.pendown()
    rafael.forward(size)
    rafael.right(90)
    rafael.forward(size)
    rafael.right(90)
    rafael.forward(size)
    rafael.right(90)
    rafael.forward(size)

def main():
    draw_square('blue', random.randint(50, 300))
    draw_square('yellow', random.randint(50, 300))
    draw_square('pink', random.randint(50, 300))
    draw_square('orange', random.randint(50, 300))

main()