python实现抽奖小程序
人气:0设计一个抽奖服务
背景:有x个奖品,要求在y天内发完;每天至少发放z个奖品;每天抽奖人数不定,事先会假设一个范围是m-n
举例:有100个奖品,要求5天内发完,每天至少发15个奖品;每天来抽奖的人估计是 2000-3000 人,希望奖品能够比较均匀,但随机的抽取出来。
接口要求:服务监听一个端口,测试程序不断连接,发送一个数字代表是第几天,比如第1-2000个请求发送1(模拟第一天来了2000人),第2001到5000请求发送2(模拟第二天来了3000人)... 服务返回 0 or 1 表示是否抽到奖品
client.py:设置初始化参数,模拟用户向server端发送数据
# -*- coding: utf-8 -*- import socket import random address = ('127.0.0.1', 31500) s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) x = int(input("奖品个数x:")) y = int(input("发放天数y:")) z = int(input("每天至少发放奖品个数:")) m = int(input("最少人数m:")) n = int(input("最多人数n:")) data = '{"x":'+str(x)+',"y":+'+str(y)+',"z":'+str(z)+',"m":'+str(m)+',"n":'+str(n)+'}' s.sendto(data.encode('utf-8'), address) for day in range(y): num = random.randint(m, n) print("第",day+1,"天人数为",num) k=0 for k in range(num): s.sendto(str(day+1).encode('utf-8'), address) s.close()
server.py:服务端接收初始数据和每个用户发送的数据
# -*- coding: utf-8 -*- import socket import lottery address = ('127.0.0.1', 31500) s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s.bind(address) list=[] data, addr = s.recvfrom(2048) data = data.decode('utf-8') print ("received:", data, "from", addr) dic=eval(data) x=dic['x'] y=dic['y'] z=dic['z'] m=dic['m'] n=dic['n'] k=0 preday = 1 while True: k += 1 day, addr = s.recvfrom(2048) if not day: print ("client has exist") break if preday != day: list.append(k-1) preday = day day = int(day.decode('utf-8')) x -= lottery.check(x,y,z,m,n,k,day,list) s.close()
lottery.py:抽奖程序算法
#Filename:lottery.py def check(x,y,z,m,n,k,day,list): #估计到来当天的人数和奖品的个数 if day == 1 or day == y: e_x = z e_people = n elif day == y: e_x = x e_people = n else: e_x = x/(y+1-day) e_people = sum(list)/len(list) #中奖间隔 length = int(e_people/e_x) lucky = 0 if x>0 and k%length == 0 : #print(x,"第",k,"个中奖") lucky = 1 print("第",k,"个--第",day,"天--是否中奖--",lucky) return lucky
源码下载:python实现抽奖小程序
想要学习更多关于抽奖功能的实现,请参考此专题:抽奖功能
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