《python语言程序设计》2018版第6章第42题Turtle：绘制sin函数，使用程序清单6-14中的函数简化5.52代码

import output06th
output06th.drawLineDo()

turtle.done()

在output06th.py中的代码

import turtle
import math


def drawLineDo():
    turtle.speed(40)
    turtle.penup()
    turtle.goto(-175, 50 * math.sin((-175 / 100 * 2 * math.pi)))
    turtle.pendown()
    for x in range(-175, 176):
        turtle.goto(x, 50 * math.sin((x / 100 * 2 * math.pi)))

    turtle.penup()
    turtle.goto(-300, 0)
    turtle.pendown()
    turtle.goto(300, 0)
    turtle.penup()
    turtle.goto(0, 300)
    turtle.pendown()
    turtle.goto(0, -300)
    turtle.penup()
    turtle.goto(-100, -15)
    turtle.write("-2\u03c0")
    turtle.goto(100, -15)
    turtle.write("2\u03c0")
    turtle.hideturtle()
    turtle.done()