Turtle实战--太极图

import turtle


# 画上勾玉
def draw_top():
    turtle.penup()
    make_border_line(-1)


# 画下勾玉
def draw_down():
    turtle.fillcolor("black")
    turtle.begin_fill()
    turtle.penup()
    make_border_line(1)
    turtle.end_fill()


# 画勾玉
def make_border_line(signed=1):
    turtle.setposition(100*signed, 0)
    turtle.pendown()
    turtle.setheading(-90*signed)
    turtle.circle(-100, 180)
    turtle.setheading(-90*signed)
    turtle.circle(50, 180)
    turtle.circle(-50, 180)


# # 画内部的圆
def draw_circle():
    draw_left()
    draw_right()


# 画内部上边的圆
def draw_left():
    turtle.fillcolor("black")
    make_circle(-1)


# 画内部右边的圆
def draw_right():
    turtle.fillcolor("white")
    make_circle(1)


# 画圆
def make_circle(signed=1):
    turtle.penup()
    turtle.setposition(75*signed, 0)
    turtle.pendown()
    turtle.begin_fill()
    turtle.setheading(-90*signed)
    turtle.circle(-25, 360)
    turtle.end_fill()


def main():
    turtle.shape("turtle")
    draw_top()
    draw_down()
    draw_circle()
    turtle.hideturtle()
    turtle.done()


if __name__ == '__main__':
    main()