from Turtle import Turtle

import argparse

from math import sin, radians

if __name__ == "__main__":

parser = argparse.ArgumentParser(description='Draw a pointed start')

parser.add_argument('n', type=int, help='number of sides of the star : odd number')

args = parser.parse_args()

n = args.n

# t = Turtle(0.5,0.1, 180/n)

t = Turtle(0.5,0.1, 180/n*6)

size = sin(radians(180/n))

for i in range(n):

t.go_forward(size)

t.turn_left(-360/n*2)

print(t._lines)

t.draw()