Exercise 4-17 Star Pattern
import turtle
# Named constants
INITIAL_ANGLE = 45
ANGLE_STEP = 135
NUM_LINES = 8
LENGTH = 200
ANIMATION_SPEED = 0
# Initialize the turtle.
turtle.hideturtle()
turtle.speed(ANIMATION_SPEED)
turtle.left(INITIAL_ANGLE)
# Draw the lines.
for count in range(NUM_LINES):
turtle.forward(LENGTH)
turtle.left(ANGLE_STEP)