条件、循环、函数定义 练习

1.画五角星

import turtle
turtle.speed(10)
turtle.bgcolor("black")
turtle.color("yellow")
turtle.fillcolor("red")
turtle.begin_fill()
for i in range(5):
    turtle.forward(100)
    turtle.right(144)
turtle.end_fill()
turtle.hideturtle()

截图：

        

2.画同心圆

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

截图：

       

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()

截图：

       

4.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(-675,240)
my_draw5(100)

my_goto(-550,300)
my_draw5(35)

my_goto(-525,245)
my_draw5(35)

my_goto(-530,185)
my_draw5(35)

my_goto(-560,145)
my_draw5(35)
turtle.hideturtle()

截图：

      

5.画◇花瓣的太阳花。

import turtle

def draw_diamond(brad):
    brad.forward(100)
    brad.left(45)
    brad.forward(100)
    brad.left(135)
    
def draw_art():

    window=turtle.Screen()
    window.bgcolor("pink")

    brad=turtle.Turtle()
    brad.shape("turtle")
    brad.color("cyan")
    brad.speed(10)
    
    for i in range(1,37):
        draw_diamond(brad)
        draw_diamond(brad)
        brad.left(10)
        
    brad.right(90)
    brad.forward(300)
    
    window.exitionclick()
        
draw_art()

截图：