练习

a、画五角星。

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

 b、画同心圆。

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

c、画太阳花。

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

d、画五个五角星

import turtle
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(-300,175)
my_draw5(100)
my_goto(-150,300)
my_draw5(50)
my_goto(-100,200)
my_draw5(50)
my_goto(-100,100)
my_draw5(50)
my_goto(-150,0)
my_draw5(50)

 

e、画◇花瓣的太阳花。

import turtle
turtle.speed(10)
turtle.fillcolor("yellow")
turtle.pencolor("red")
turtle.begin_fill()
def my_draw():
    for i in range(1,3):
        turtle.forward(100)
        turtle.right(45)
        turtle.forward(100)
        turtle.right(135)

for i in range(1,40):
    my_draw()
    turtle.right(10)
turtle.end_fill()
turtle.right(30)
turtle.forward(50)
turtle.hideturtle()