条件、循环、函数定义 练习

画五角星

import turtle
turtle.bgcolor('red')
turtle.color('yellow')
turtle.fillcolor('yellow')

turtle.begin_fill()

for i in range(5):
    turtle.forward(80)
    turtle.right(144)
turtle.end_fill()

画同心圆

import turtle
for i in range(10):
    
    
    turtle.up()
    turtle.goto(0,-20*(i+1))
    turtle.down()
    turtle.begin_fill()
    turtle.circle(20*(i+1))
    turtle.write(10-i)

 

画太阳花

import turtle
turtle.color("red")
turtle.pencolor('yellow')
turtle.pensize(3)
turtle.begin_fill()
while True:
    turtle.forward(200)
    turtle.left(170)
    if (abs(turtle.pos()))<1:
        break

turtle.end_fill()

画五个角星

import turtle
turtle.bgcolor('red')
turtle.color('yellow')
turtle.fillcolor('yellow')

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

turtle.begin_fill()
mygoto(-250,200)
for i in range(5):
    turtle.forward(60)
    turtle.right(144)
turtle.end_fill()



turtle.begin_fill()
mygoto(-150,270)
for i in range(5):
    turtle.forward(25)
    turtle.right(144)
turtle.end_fill()



turtle.begin_fill()
mygoto(-130,220)
for i in range(5):
    turtle.forward(25)
    turtle.right(144)
turtle.end_fill()


turtle.begin_fill()
mygoto(-110,150)
turtle.left(60)
for i in range(5):
    turtle.forward(25)
    turtle.right(144)
turtle.end_fill()


turtle.begin_fill()
mygoto(-160,108)
turtle.left(80)
for i in range(5):
    turtle.forward(25)
    turtle.right(144)
turtle.end_fill()