用python画一只乌龟

好的，下面是用Python的turtle库画一只乌龟的代码：

import turtle

# 创建画布
canvas = turtle.Screen()
canvas.bgcolor("white")

# 创建画笔
pen = turtle.Turtle()
pen.speed(2)

# 画出乌龟头部
pen.penup()
pen.goto(-50, 0)
pen.pendown()
pen.circle(50)

# 画出乌龟身体
pen.penup()
pen.goto(50, 0)
pen.pendown()
pen.circle(50)

# 画出乌龟四条腿
pen.penup()
pen.goto(-25, -50)
pen.pendown()
pen.forward(50)

pen.penup()
pen.goto(-25, -50)
pen.pendown()
pen.right(90)
pen.forward(25)

pen.penup()
pen.goto(25, -50)
pen.pendown()
pen.left(180)
pen.forward(50)

pen.penup()
pen.goto(25, -50)
pen.pendown()
pen.right(90)
pen.forward(25)

# 画出乌龟尾巴
pen.penup()
pen.goto(75, 10)
pen.pendown()
pen.right(120)
pen.forward(50)

# 隐藏画笔
pen.hideturtle()

# 关闭画布
canvas.exitonclick()

运行代码后，会弹出一个窗口，显示出画出的乌龟。你可以尝试修改代码，让乌龟的颜色、大小等属性发生变化。