python怎么用turtle畫圣誕樹

使用turtle庫可以很方便地繪制圣誕樹，下面是一個示例代碼：

import turtle

def draw_triangle(size):
    turtle.begin_fill()
    for _ in range(3):
        turtle.forward(size)
        turtle.left(120)
    turtle.end_fill()

def draw_tree(size, level):
    if level == 0:
        turtle.color("green")
        draw_triangle(size)
        turtle.color("black")
    else:
        turtle.color("brown")
        turtle.forward(size/2)
        turtle.right(30)
        draw_tree(size/2, level-1)
        turtle.left(30)
        turtle.backward(size/2)
        turtle.right(60)
        draw_tree(size/2, level-1)
        turtle.left(60)
        turtle.backward(size/2)
        turtle.right(30)
        turtle.color("green")
        draw_triangle(size)

def draw_star(size):
    turtle.color("yellow")
    turtle.begin_fill()
    for _ in range(5):
        turtle.forward(size)
        turtle.right(144)
    turtle.end_fill()

# 設置畫布大小和背景色
turtle.setup(800, 600)
turtle.bgcolor("white")

# 移動到樹的底部中心位置
turtle.penup()
turtle.goto(0, -250)
turtle.pendown()

# 繪制圣誕樹
draw_tree(200, 4)

# 移動到星星的位置
turtle.penup()
turtle.goto(0, 0)
turtle.pendown()

# 繪制星星
draw_star(50)

# 隱藏畫筆
turtle.hideturtle()
turtle.done()

運行以上代碼，即可在turtle圖形窗口中看到繪制的圣誕樹和星星。