条件、循环、函数定义 练

1、画五角星

import turtle
>>> turtle.pensize(1)
>>> turtle.fillcolor("pink")
>>> 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(5):
    turtle.up()
    turtle.goto(0,-20*(i+1))
    turtle.down()
    turtle.circle(20*(i+1))

3.画太阳花

import turtle
turtle.speed(10)
turtle.bgcolor("black")
turtle.color("cyan")
turtle.fillcolor("yellow")
turtle.begin_fill()
while True:
    turtle.forward(200)
    turtle.left(170)
    if(abs(turtle.pos()))<1:
        break
turtle.end_fill()
turtle.hideturtle()

4.画五个五角星

import turtle
turtle.speed(100)
turtle.bgcolor('red')
turtle.color('yellow')
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(-300,200)
my_draw5(100)


my_goto(-150,280)
turtle.left(50)
my_draw5(30)

my_goto(-100,220)
turtle.left(50)
my_draw5(30)

my_goto(-85,155)
turtle.left(50)
my_draw5(30)

my_goto(-120,110)
turtle.left(50)
my_draw5(30)

turtle.hideturtle()
turtle.done()

 

5.画◇花瓣的太阳花。

import turtle

turtle.color('yellow','blue')
turtle.bgcolor('pink')

turtle.begin_fill()
for i in range(1,37):
    
    turtle.forward(200)
    turtle.right(45)
    turtle.forward(200)
    turtle.right(135)
    turtle.forward(200)
    turtle.right(45)
    turtle.forward(200)
    turtle.right(135)
    turtle.left(10)
    turtle.speed("fastest")
turtle.right(90)
turtle.forward(500)
turtle.end_fill()
turtle.hideturtle()