python雪花飘落

可以使用Python的turtle库实现雪花飘落的效果。以下是一个简单的示例代码：

import turtle
import random

# 设置画笔
turtle.speed(0)
turtle.penup()
turtle.hideturtle()

# 雪花形状
turtle.getscreen().register_shape("snowflake", ((-5,-5), (-5,5), (5,5), (5,-5), (0,0)))

# 雪花列表
snowflakes = []

# 创建雪花函数
def create_snowflake():
    x = random.randint(-turtle.window_width()//2, turtle.window_width()//2)
    y = turtle.window_height()//2 + 50
    snowflake = turtle.Turtle(shape="snowflake")
    snowflake.color("white")
    snowflake.penup()
    snowflake.setpos(x, y)
    snowflake.speed = random.randint(1, 5)
    snowflakes.append(snowflake)

# 循环绘制雪花
while True:
    create_snowflake()
    for flake in snowflakes:
        y = flake.ycor()
        y -= flake.speed
        flake.sety(y)
        # 雪花超出屏幕则删除
        if flake.ycor() < -turtle.window_height()//2:
            flake.clear()
            flake.hideturtle()
            snowflakes.remove(flake)

# 点击关闭窗口
turtle.exitonclick()