自定义的画正N边形函数

from __future__ import print_function, division

import math

import turtle

bob=turtle.Turtle()

def square(t,length):

    print(t)

    for i in range(4):

        t.fd(length)

        t.lt(90)

square(bob,150)

def polygon(t,length,n):

    print(t)

    for i in range(n):

        t.fd(length)

        t.lt(360/n)

polygon(bob,50,6)

turtle.mainloop()