条件、循环、函数定义 练习

1、画五角星

import turtle
>>> turtle.pencolor("red")
>>> turtle.pensize(1)
>>> turtle.fillcolor("yellow")
>>> turtle.begin_fill()
>>> for i in range(5):
	turtle.forward(100)
	turtle.right(144)

	
>>> turtle.end_fill()
>>> turtle.hideturtle()
>>> turtle.done()

　　

2、画同心圆

import turtle
for i in range(3):
	turtle.circle(10*(i+1))
	turtle.up()
	turtle.goto(0,-10*(i+1))
	turtle.down()

	
turtle.hideturtle()
turtle.done()

　　

3、画太阳花

from turtle import*
color("red","yellow")
begin_fill()
while True:
    forward(200)
    left(170)
    if(abs(pos()))<1:
        break
end_fill()
done()

　　

4、画五个五角星

import turtle
turtle.setup(800,600,0)
turtle.color("yellow")
turtle.bgcolor("red")
turtle.fillcolor("yellow")

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

def my_draw5(r):
    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.right(144)
    turtle.end_fill()

my_goto(-350,180)
my_draw5(150)


my_goto(-175,250)
turtle.left(50)
my_draw5(50)

my_goto(-100,173)
turtle.left(44)
my_draw5(50)

my_goto(-70,80)
turtle.left(50)
my_draw5(50)

my_goto(-130,50)
turtle.left(50)
my_draw5(50)

turtle.hideturtle()
turtle.done()

　　

5、画◇花瓣的太阳花

import turtle

turtle.speed("fastest")
turtle.fillcolor("yellow")
turtle.pencolor("red")
turtle.begin_fill()
def draw_art():
    for i in range(1,3):
        turtle.forward(150)
        turtle.right(45)
        turtle.forward(150)
        turtle.right(135)

for i in range(1,37):
    draw_art()
    turtle.left(10)
turtle.end_fill()
turtle.forward(400)

turtle.hideturtle()
turtle.done()