条件循环函数定义 练习

Posted 2020-10-06 郑淑莹

a.画五角星

import turtle

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

b.画同心圆

from turtle import*

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

c.画太阳花

from turtle import*

color(\'pink\',\'yellow\')
begin_fill()
while True:
    forward(200)
    right(150)
    if(abs(pos()))<1:
        break
end_fill()
hideturtle()

d.画五个角星

import turtle

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

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

def lsw_draw5(r):
    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.right(144)
    turtle.end_fill()

lsw_goto(-250,80)
lsw_draw5(100)

lsw_goto(-150,150)
lsw_draw5(50)

lsw_goto(-100,100)
lsw_draw5(50)

lsw_goto(-90,45)
lsw_draw5(50)

lsw_goto(-150,5)
lsw_draw5(50)

turtle.hideturtle()

e.画◇花瓣的太阳花

 

import turtle

turtle.color(\'yellow\',\'blue\')
turtle.bgcolor(\'pink\')

turtle.begin_fill()
for i in range(1,37):
    
    turtle.forward(200)
    turtle.right(45)
    turtle.forward(200)
    turtle.right(135)
    turtle.forward(200)
    turtle.right(45)
    turtle.forward(200)
    turtle.right(135)
    turtle.left(10)
    turtle.speed("fastest")
turtle.right(90)
turtle.forward(500)
turtle.end_fill()
turtle.hideturtle()