用python编写的简易抽奖小程序_python 单线程抽奖

学习python的图形界面设计过程中，花了2个多小时写了一个小程序自娱自乐。中间自己调试花了不少时间，主要是单线程跑的话，按钮卡死，后来改用多线程搞定。

话不多说，代码原文奉上

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time : 2020/3/18 15:14
# @Author : Lihua
# @Site : 
# @File : 抽奖小程序.py
# @Software: PyCharm
import random
import time
from tkinter import *
import threading
from tkinter import messagebox as msgbox

root = Tk()

list_candidate=["张三","李四","王五"]

class lottery():
    def __init__(self):
        self.root=root
        self.msgbox=msgbox
        self.root.geometry("800x600+280+80")
        self.root.title("抽奖小程序")
        self.button_start=Button(self.root,text="开始抽奖",width=6,command=self.start)
        self.button_stop=Button(self.root,text="结束抽奖",width=6,command=self.stop)
        self.label_str=StringVar()
        self.label_str.set("抽奖马上开始了")
        self.label_winner = Label(self.root, font=("华文行楷", 20), width=20, height=30,fg="pink",textvariable=self.label_str)
        self.label_winner.pack()

        self.button_start.place(relx=0.2,rely=0.7)
        self.button_stop.place(relx=0.7,rely=0.7)

        self.ready=0

        self.root.mainloop()


    def draw(self):
        print("开始滚动显示中奖人信息")
        global list_candidate
        while self.ready:
            index_num = random.randint(1, 1000) % len(list_candidate)
            #print(index_num)
            winner = list_candidate[index_num]
            self.label_str.set(winner)
        print("赢家是" + winner)
        self.msgbox.showinfo("发红包", "恭喜" + winner + "，您中奖啦！")


    def start(self):
        print("开始抽奖")
        self.ready=1
        #此处必须启用新的线程，否则会卡死在开始按钮，且标签的中奖人信息不会刷新
        self.thread=threading.Thread(target=self.draw,args=())
        self.thread.setDaemon(True)
        self.thread.start()



    def stop(self):
        print("结束抽奖")
        global winner
        self.ready=0


if __name__ == '__main__':
    Lottery=lottery()
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