Python学习-turtle画图

import turtle
class draw():
    '''
    定义一个可以画图的类
    '''
    def __init__(self):
        self.colors = ['pink', 'yellow', 'blue', 'purple', 'magenta', 'cyan','red','indigo']
        self.length = 200

    def square(self, n):
        '''
        画n边形
        :param n:
        :return:
        '''
        angle1 = int(360 / n) + 1
        for i in range(self.length):
            i += 1
            turtle.pencolor(self.colors[i % 4])
            turtle.forward(i)
            turtle.right(angle1)

    def circle(self, n):
        '''
        画n个园交汇
        :param n:
        :return:
        '''
        angle1 = int(360 / n) + 1
        for i in range(0,self.length,n):
            i += n
            for k in range(n):
                turtle.pencolor(self.colors[k])
                turtle.circle(i)
                turtle.right(angle1)


def main():
    turtle.speed(10)
    start = draw()
    start.square(4)
    # start.circle(6)
    turtle.exitonclick()