本文参考了https://blog.csdn.net/weixin_43943977/article/details/102691392博主的樱花以及https://blog.csdn.net/weixin_44786530/article/details/90311184博主的烟花

“樱花是爱情与希望的象征，代表着高雅，质朴纯洁的爱情。樱花宛如懵懂少女的，安静得在春天开放，满树的白色粉色的樱花，是对情人诉说爱情的最美语言python小作品代码。心中的某个人，就如那场寂寞的樱花雨，缓缓消失在时光的深处，留下永恒的记忆。”

“烟花过后,灿烂瞬间转为平淡。瞬息万变的烟花，花瓣如雨，纷纷坠落，似乎触手可及，却只是昙花一现。”

试着将樱花与烟花结合起来，但烟花却无法在上空绽放，后面再调整吧

源码如下：

import turtle

import random

import time

from PIL import Image, ImageTk

# from time import sleep

import tkinter as tk

from time import sleep

from random import choice, uniform, randint

from math import sin, cos, radians

# 模拟重力

GRAVITY = 0.05

# 颜色选项(随机或者按顺序)

colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen', 'indigo', 'cornflowerblue']

# 画樱花的躯干(60,t)

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 = 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)

class Particle:

def __init__(self, cv, idx, total, explosion_speed, x=0., y=0., vx=0., vy=0., size=2., color='red', lifespan=2,

**kwargs):

self.id = idx

self.x = x

self.y = y

self.initial_speed = explosion_speed

self.vx = vx

self.vy = vy

self.total = total

self.age = 0

self.color = color

self.cv = cv

self.cid = self.cv.create_oval(

x - size, y - size, x + size,

y + size, fill=self.color)

self.lifespan = lifespan

def update(self, dt):

self.age += dt

# 粒子范围扩大

if self.alive() and self.expand():

move_x = cos(radians(self.id * 360 / self.total)) * self.initial_speed

move_y = sin(radians(self.id * 360 / self.total)) * self.initial_speed

self.cv.move(self.cid, move_x, move_y)

self.vx = move_x / (float(dt) * 1000)

# 以自由落体坠落

elif self.alive():

move_x = cos(radians(self.id * 360 / self.total))

# we technically don't need to update x, y because move will do the job

self.cv.move(self.cid, self.vx + move_x, self.vy + GRAVITY * dt)

self.vy += GRAVITY * dt

# 移除超过最高时长的粒子

elif self.cid is not None:

cv.delete(self.cid)

self.cid = None

# 扩大的时间

def expand (self):

return self.age <= 1.2

# 粒子是否在最高存在时长内

def alive(self):

return self.age <= self.lifespan

'''

循环调用保持不停

'''

def simulate(cv):

# time.sleep(0.0005)

t1 = time.time()

explode_points = []

wait_time = randint(10, 100)

numb_explode = randint(6, 10)

# 创建一个所有粒子同时扩大的二维列表

for point in range(numb_explode):

objects = []

x_cordi = randint(50, 550)

y_cordi = randint(50, 150)

speed = uniform(0.5, 1.5)

size = uniform(0.5, 3)

color = choice(colors)

explosion_speed = uniform(0.2, 1)

total_particles = randint(10, 50)

for i in range(1, total_particles):

r = Particle(cv, idx=i, total=total_particles, explosion_speed=explosion_speed, x=x_cordi, y=y_cordi,

vx=speed, vy=speed, color=color, size=size, lifespan=uniform(0.6, 1.75))

objects.append(r)

explode_points.append(objects)

total_time = .0

# 1.8s内一直扩大

while total_time < 1.8:

sleep(0.01)

tnew = time.time()

t1, dt = tnew, tnew - t1

for point in explode_points:

for item in point:

item.update(dt)

cv.update()

total_time += dt

# 循环调用

root.after(wait_time, simulate, cv)

def close(*ignore):

"""退出程序、关闭窗口"""

global root

root.quit()

if __name__ == '__main__':

root = tk.Tk()

cv = tk.Canvas(root, height=520, width=750)

cv.pack()

image = Image.open("./black.jpg")

photo = ImageTk.PhotoImage(image)

w = turtle.TurtleScreen(cv)

t = turtle.RawTurtle(w)

# 选一个好看的背景会让效果更惊艳！

cv.create_image(0, 0, image=photo)

# root.mainloop()

t.hideturtle() # 隐藏画笔

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

w.screensize(bg='black') # 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)

root.protocol("WM_DELETE_WINDOW", close)

root.after(100, simulate, cv)

root.mainloop()

# w.exitonclick()

注：原樱花采用Turtle，烟花采用tkinter，结合需将Turtle转化为tkinter，转化代码为：

root = tk.Tk()

cv = tk.Canvas(root, height=520, width=750)

w = turtle.TurtleScreen(cv)

t = turtle.RawTurtle(w)

以及import time与from time import time的区别。