如标题救救孩子吧…………………………………………………………
import turtle
import math
window = turtle.Screen()
draw = turtle.Turtle()
draw.pu()
draw.setx(-300)
draw.sety(100*math.sin(-300/40))
draw.pd()
for i in range(-300, 300):
draw.setx(i)
draw.sety(100*math.sin(i/40))
window.exitonclick()
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