条件循环函数定义练习

Posted 2020-10-06 陆倩霞

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1.注意标准库的两种导入与使用方式，建议大家采用<库名>.<函数名>的方式。

2.对前面的代码进行优化，用for,while,if,def实现：

画五角星

import turtle
turtle.color(\'yellow\')

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

def my_drwa5(r):

    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.left(144)
        
my_goto(10,10)
my_drwa5(150)
turtle.end_fill()
turtle.hideturtle()
tuertle.done()

画同心圆

import turtle
for i in range(6):
    turtle.up()
    turtle.goto(0,-20*(i+1))
    turtle.down()
    turtle.circle(20*(i+1))
turtle.hideturtle()
turtle.done()

画太阳花

import turtle
turtle.color(\'red\',\'pink\')
turtle.begin_fill()
while True:
    turtle.forward(200)
    turtle.right(170)
    if(abs(turtle.pos()))<1:
        break
    
turtle.end_fill()
turtle.hideturtle()
turtle.done()

画五个五角星

import turtle
turtle.bgcolor(\'red\')
turtle.color(\'yellow\')

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

def my_drwa5(r):

    turtle.begin_fill()
    for i in range(5):
        turtle.forward(r)
        turtle.left(144)
        
my_goto(-750,235)
my_drwa5(150)
turtle.end_fill()

turtle.begin_fill()
my_goto(-550,360)
my_drwa5(50)
turtle.end_fill()

turtle.begin_fill()
my_goto(-500,300)
my_drwa5(50)
turtle.end_fill()

turtle.begin_fill()
my_goto(-490,230)
my_drwa5(50)
turtle.end_fill()

turtle.begin_fill()
my_goto(-550,170)
my_drwa5(50)
turtle.end_fill()

turtle.hideturtle()
turtle.done()

画◇花瓣的太阳花

import turtle
turtle.speed(10)
turtle.fillcolor(\'yellow\')
turtle.bgcolor(\'pink\')
turtle.begin_fill()
for i in range(1,37):
    turtle.forward(100)
    turtle.right(45)
    turtle.forward(100)
    turtle.right(135)
    turtle.forward(100)
    turtle.right(45)
    turtle.forward(100)
    turtle.right(135)
    turtle.left(10)
turtle.end_fill()
turtle.color(\'purple\')
turtle.begin_fill()    
turtle.right(90)
turtle.forward(300)
turtle.end_fill()

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