条件、循环、函数定义 练习

画五角星

import turtle
turtle.bgcolor('pink')
turtle.color('purple')
while True:
    turtle.forward(200)
    turtle.right(144)
    if(abs(turtle.pos()))<1:
        break

　　

画太阳花

import turtle
turtle.bgcolor('pink')
turtle.color('purple')
turtle.fillcolor('blue')

turtle.begin_fill()
while True:
    turtle.forward(200)
    turtle.left(140)
    if(abs(turtle.pos()))<1:
        break
turtle.end_fill()
done()

　　

画同心圆

import turtle
for i in range(5):
    turtle.up()
    turtle.goto(0,-20*(i+1))
    turtle.down()
    turtle.circle(20*(i+1))

　　

 画五个角星

import turtle
turtle.setup(600,400,0,0)
turtle.color("yellow")
turtle.bgcolor('red')
turtle.fillcolor('yellow')

def hahagoto(x,y):
    turtle.up()
    turtle.goto(x,y)
    turtle.down()

hahagoto(-250,100)

turtle.begin_fill()
for i in range(5):
    turtle.forward(100)
    turtle.right(144)
turtle.end_fill()

hahagoto(-150,160)

turtle.begin_fill()
for i in range(5):
    turtle.forward(40)
    turtle.right(144)
turtle.end_fill()

hahagoto(-115,120)

turtle.begin_fill()
for i in range(5):
    turtle.forward(40)
    turtle.right(144)
turtle.end_fill()

hahagoto(-120,70)

turtle.begin_fill()
for i in range(5):
    turtle.forward(40)
    turtle.right(144)
turtle.end_fill()

hahagoto(-150,25)

turtle.begin_fill()
for i in range(5):
    turtle.forward(40)
    turtle.right(144)
turtle.end_fill()