수업 자료입니다. 아래는 파이썬 코드

from turtle import*

from math import*

sun=Turtle()

moon=Turtle()

earth=Turtle()

sun.shape('turtle')

moon.shape('triangle')

earth.shape('circle')

earth.up()

moon.up()

tracer(False)

sun.goto(0,0)

earth.goto(150,0)

moon.goto(210,0)

tracer(True)

earth.down()

moon.down()

earth_degree=0

moon_degree=0

while(True):

    earth_x=cos(earth_degree)*150

    earth_y=sin(earth_degree)*150

    moon_x=cos(moon_degree)*60 + earth_x

    moon_y=sin(moon_degree)*60 + earth_y

    earth.goto(earth_x, earth_y)

    moon.goto(moon_x, moon_y)

    earth_degree=earth_degree+0.02

    moon_degree=moon_degree+0.26