一场樱花雨（Python实现）

import turtle as T

import random

import time

#=======画樱花的躯干(60,t)===============

T.title('凋落的樱花')

def Tree(branch, t):

    time.sleep(0.0005)

    if branch > 3:

        if 8 <= branch <= 12:

            if random.randint(0, 2) == 0:

                t.color('snow')  # 白

            else:

                t.color('lightcoral')  # 淡珊瑚色

            t.pensize(branch / 3)

        elif branch < 8:

            if random.randint(0, 1) == 0:

                t.color('snow')

            else:

                t.color('lightcoral')  # 淡珊瑚色

            t.pensize(branch / 2)

        else:

            t.color('sienna')  # 赭(zhě)色

            t.pensize(branch / 10)  # 6

        t.forward(branch)

        a = 1.5 * random.random()

        t.right(20 * a)

        b =外汇跟单gendan5.com 1.5 * random.random()

        Tree(branch - 10 * b, t)

        t.left(40 * a)

        Tree(branch - 10 * b, t)

        t.right(20 * a)

        t.up()

        t.backward(branch)

        t.down()

#=============掉落的花瓣===================

def Petal(m, t):

    for i in range(m):

        a = 200 - 400 * random.random()

        b = 10 - 20 * random.random()

        t.up()

        t.forward(b)

        t.left(90)

        t.forward(a)

        t.down()

        t.color('lightcoral')  # 淡珊瑚色

        t.circle(1)

        t.up()

        t.backward(a)

        t.right(90)

        t.backward(b)

#=======绘图区域============

t = T.Turtle()

# 画布大小

w = T.Screen()

t.hideturtle()  # 隐藏画笔

t.getscreen().tracer(5, 0)

w.screensize(bg='wheat')  # wheat小麦

t.left(90)

t.up()

t.backward(150)

t.down()

t.color('sienna')

#=====画樱花的躯干===========

Tree(60, t)

# 掉落的花瓣

Petal(200, t)

w.exitonclick()