python用turtle画正弦函数

可以使用Python中的turtle模块来画正弦函数。具体步骤如下：

1. 导入turtle模块

import turtle

2. 创建一个画布和画笔

canvas = turtle.Screen()
pen = turtle.Turtle()

3. 设置画笔的颜色和粗细

pen.color("blue")
pen.pensize(2)

4. 设置起始点和终止点

start_x = -200
end_x = 200

5. 循环画出正弦函数的图像

for x in range(start_x, end_x):
    y = math.sin(x / 50) * 100
    pen.goto(x, y)

6. 关闭画布

canvas.exitonclick()

完整代码如下：

import turtle
import math

canvas = turtle.Screen()
pen = turtle.Turtle()

pen.color("blue")
pen.pensize(2)

start_x = -200
end_x = 200

for x in range(start_x, end_x):
    y = math.sin(x / 50) * 100
    pen.goto(x, y)

canvas.exitonclick()