#Nicholas Jones p149676.
#Simple spiral program for turtle.
import turtle

#Set turtle posistion to top left of screen
turtle.penup()
turtle.setpos(-400,380)
turtle.pendown()
#These two variables determine the size of spiral
len1 = 700
len2 = 2
#This loops and decrements the length that turtle
#travels after each turn
while len1 > 0:
    turtle.forward(len1)
    turtle.right(90)
    len1 = len1 - len2