本周，要给大家推荐的创意编程作品是地球公转运动程序：

源代码如下：

# 不带地球自转

import turtle

sun = turtle.Turtle()

earth = turtle.Turtle()

moon = turtle.Turtle()

day = turtle.Turtle()

screen = turtle.Screen()

screen.tracer(0, 30)

screen.bgpic('背景.gif')

screen.register_shape('太阳.gif')

screen.register_shape('地球.gif')

screen.register_shape('月亮.gif')

sun.shape('太阳.gif')

earth.shape('地球.gif')

moon.shape('月亮.gif')

re = 180

rm = 70

earth.penup()

moon.penup()

day.penup()

day.hideturtle()

day.color('white')

day.goto(-450,-260)

for i in range(1,366):

# 标注天数

day.clear()

day.write(str(i)+'days',font=('Arial',40,'bold'))

# while True的时候

# day.write(str(i%365)+'days',font=('Arial',40,'bold'))

# 地球公转

earth.goto(0,0)

earth.left(360/365)

earth.forward(re)

# 月球公转

moon.goto(earth.position())

moon.left(12*360/365)

moon.forward(rm)

screen.update()

可以扫描二维码，直接在手机端执行程序

也可以点击链接直接执行程序:

# 不带地球自转

import turtle

sun = turtle.Turtle()

earth = turtle.Turtle()

moon = turtle.Turtle()

day = turtle.Turtle()

screen = turtle.Screen()

screen.tracer(0, 30)

screen.bgpic('背景.gif')

screen.register_shape('太阳.gif')

screen.register_shape('地球.gif')

screen.register_shape('月亮.gif')

sun.shape('太阳.gif')

earth.shape('地球.gif')

moon.shape('月亮.gif')

re = 180

rm = 70

earth.penup()

moon.penup()

day.penup()

day.hideturtle()

day.color('white')

day.goto(-450,-260)

for i in range(1,366):

# 标注天数

day.clear()

day.write(str(i)+'days',font=('Arial',40,'bold'))

# while True的时候

# day.write(str(i%365)+'days',font=('Arial',40,'bold'))

# 地球公转

earth.goto(0,0)

earth.left(360/365)

earth.forward(re)

# 月球公转

moon.goto(earth.position())

moon.left(12*360/365)

moon.forward(rm)

screen.update()

可以用微信扫描二维码，直接在手机端执行程序

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