Square Spiral with Python and Turtle (Source Code)

Draw the following spiral with square shape. In each loop, increase the forward length and turn slightly less than 90 degrees.

Source Code:

import turtle
screen = turtle.Screen()
screen.title('Square Spiral - PythonTurtle.Academy')
turtle.setup(1000,1000)
screen.setworldcoordinates(-1000,-1000,1000,1000)
turtle.speed(0)
turtle.hideturtle()

for i in range(10,1800,6):
    turtle.fd(i)
    turtle.left(89.7)