条件、循环、函数定义 练习

1.

import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.begin_fill()
for i in range(5):
turtle.forward(100)
turtle.right(144)
turtle.end_fill()

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

3.from turtle import*
color('red')
fillcolor('blue')
begin_fill()
while True:
forward(200)
left(170)
if(abs(pos()))<1:
break

end_fill()
done()

4.

mport turtle

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

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

turtle.begin_fill()
Igoto(-200,200)
for i in range(5):
turtle.forward(100)
turtle.right(144)
turtle.end_fill()

turtle.begin_fill() 
Igoto(-100,250)
for i in range(5):
turtle.forward(20)
turtle.right(144)
turtle.end_fill()

turtle.begin_fill()
Igoto(-100,200)
for i in range(5):
turtle.forward(20)
turtle.right(144)
turtle.end_fill()

turtle.begin_fill() 
Igoto(-100,150)
for i in range(5):
turtle.forward(20)
turtle.right(144)
turtle.end_fill()

turtle.begin_fill()
Igoto(-100,100)
for i in range(5):
turtle.forward(20)
turtle.right(144)

turtle.end_fill()