用python画一只乌龟

import turtle as t

def draw_turtle():
    # 设置屏幕
    screen = t.Screen()
    screen.title("用Python画一只乌龟")
    screen.bgcolor("lightblue")  # 背景色
    
    # 创建画笔
    pen = t.Turtle()
    pen.speed(3)  # 画图速度 (1-10, 0为最快)
    pen.width(3)  # 线条宽度
    pen.hideturtle() # 隐藏默认的箭头形状，我们自己画

    # --- 1. 画龟壳 (身体) ---
    pen.penup()
    pen.goto(0, -50)
    pen.pendown()
    pen.color("black", "green")  # 轮廓黑，填充绿
    pen.begin_fill()
    pen.circle(50)  # 画一个圆作为壳
    pen.end_fill()

    # 画壳上的花纹 (简单的六边形网格示意)
    pen.penup()
    pen.goto(0, -10)
    pen.pendown()
    pen.color("darkgreen")
    pen.width(2)
    for i in range(6):
        pen.right(60)
        pen.forward(30)
        pen.backward(30)
    
    # --- 2. 画头 ---
    pen.penup()
    pen.goto(40, 10) # 头的位置
    pen.setheading(0)
    pen.pendown()
    pen.color("black", "lightgreen")
    pen.begin_fill()
    pen.circle(20)
    pen.end_fill()
    
    # 画眼睛
    pen.penup()
    pen.goto(55, 35)
    pen.pendown()
    pen.color("black")
    pen.dot(5) # 画一个实心圆点作为眼睛

    # --- 3. 画四肢 ---
    limbs_positions = [
        (-30, -20, 220), # 左后
        (-30, 20, 140),  # 左前
        (30, -20, -40),  # 右后
        (30, 20, 40)     # 右前
    ]
    
    pen.color("black", "lightgreen")
    for x, y, heading in limbs_positions:
        pen.penup()
        pen.goto(x, y)
        pen.setheading(heading)
        pen.pendown()
        pen.begin_fill()
        # 画椭圆形的脚
        pen.circle(15, 180) 
        pen.end_fill()

    # --- 4. 画尾巴 ---
    pen.penup()
    pen.goto(-50, -10)
    pen.setheading(180)
    pen.pendown()
    pen.color("black", "lightgreen")
    pen.begin_fill()
    pen.right(30)
    pen.forward(20)
    pen.right(120)
    pen.forward(20)
    pen.end_fill()

    # 完成
    pen.penup()
    pen.goto(0, -100)
    pen.color("black")
    pen.write("这是一只Python乌龟!", align="center", font=("Arial", 16, "bold"))
    
    # 点击关闭
    screen.exitonclick()

if __name__ == "__main__":
    draw_turtle()