The SILShack class blog - Fall 2013

import turtle
import turtlehack
import random

# A function that draws an n-sided polygon
def n_sided_polygon(turtle, n, color="#FFFFFF", line_thickness=1):
    '''
    Draw an n-sided polygon
    input: turtle, number of sides, line color, line thickness
    '''
    # for n times:
    # Draw a line, then turn 360/n degrees and draw another

    # set initial parameters
      turtle.degrees()
    line_length=80
      turtle.pensize(line_thickness)
      turn_angle = (360/n)
      i = 1

    # Draw each line segment and turn

      while (i <= n):
        turtle.color(color)
            turtle.pendown()
            turtle.forward(line_length)
         turtle.penup()
            turtle.right(turn_angle)
            i += 1

    return 0
 
## MAIN ##
# set initial parameters
n=random.randint(3,12)

# create the Turtle instance
graphic = turtle.Turtle()
# Call the polygon code
n_sided_polygon(graphic, n, turtlehack.random_color(), random.randint(4,8))

# Close and exit
ignore = raw_input("hit any key to continue:")