Draw the fibonacci spiral with Python turtle

fibonacci_spiral.py

import argparse
import turtle

parser = argparse.ArgumentParser(description='Draw the fibonacci spiral')
parser.add_argument('n', type=int, help='Length of fibonacci sequence')
parser.add_argument('-s', '--scale', type=int, default=1)
parser.add_argument('--speed', type=int, default=6, help='Turtle speed')
args = parser.parse_args()


def fib(n):
    a, b = 1, 1
    for _ in range(n):
        yield a
        a, b = b, a+b


turtle.speed(args.speed)
turtle.right(90)

for n in fib(args.n):
    turtle.circle(n*args.scale, 90)

The code does not work. Please provide further detailed guidelines. Thanks.

Can you please give more details on what is not working and what environment you're using? Any kind of error message might be helpful.