条件、循环、函数

1、五角星

import turtle
for i in range(5):
turtle.forward(200)
turtle.left(144)

2、同心圆

import turtle
for i in range(5):
turtle.up()
turtle.goto(0,-10*(i+1))
turtle.down()
turtle.circle(10*(i+1))

3、太阳花

import turtle
turtle.color('yellow')
turtle.fillcolor('red')
turtle.begin_fill()
while True:
turtle.forward(200)
turtle.left(150)
if(abs(turtle.pos()))<1:
break
turtle.end_fill()

4、五个五角星

import turtle
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(-100,115)

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

mygoto(-50,85)

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

mygoto(-50,35)

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

mygoto(-100,0)

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