条件、循环、函数定义练习

1、

from turtle import *

 

for i in range(5)

forward（200）

right(144)

2、

from turtle import *
for i in range(5):
circle(20*i)
up()
goto(0,-20*i)
down()
write(10-i)

3、

from turtle import *
while True:
forward(200)
left(170)
if(abs(pos()))<1:
break

4、

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

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

mygoto(-250,75)

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

mygoto(-100,150)

turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-50,80)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-80,0)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-170,-30)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()