Python练习小程序之定时关机小脚本（代码教程）

就不多介绍了，直接上代码吧。

#coding:utf-8
import datetime, time, os, wx
import tkinter, threading
from tkinter import * #控件基础包

#全局变量
stopFlag = False;
winWidth = 0;
winHeight = 0;

#倒计时
def countdown(flag):
    value_s = var_s.get();
    try:
        seconds = int(value_s);
        #操作
        if flag == "shut":
            shutdown(value_s);
        else:
            restart(value_s);
        #显示倒计时
        show_countdown(seconds);
    except:
        label_pro.config(text="请输入正确的数字。");
        root.update();
        return;

#显示倒计时
def show_countdown(seconds):
    global stopFlag;
    stopFlag = False;
    while seconds > 0:
        if stopFlag:
            break;
        time.sleep(1);
        seconds = seconds - 1;
        label_pro.config(text="关机倒计时： "+str(seconds)+" 秒");
        root.update();

#关机操作
def shutdown(seconds):
    os.system("shutdown -s -f -t "+seconds);

#重启操作
def restart(seconds):
    os.system("shutdown -r -f -t "+seconds);
    
#终止关机操作
def stopdown():
    global stopFlag;
    stopFlag = True;
    os.system("shutdown -a");

#退出操作
def exit():
    still.set(0);
    thread.join(0.2);
    root.destroy();#关闭窗口

#获取当前时间
def getDateTime():
    while still.get()==1:
        dateTime = datetime.datetime.now();
        hourStr = addZero(dateTime.hour);
        minuteStr = addZero(dateTime.minute);
        secondStr = addZero(dateTime.second);
        timeValue = hourStr+':'+minuteStr+':'+secondStr;
        label_time.config(text='当前时间：'+timeValue); #显示当前时间
        time.sleep(0.2);

#补零
def addZero(number):
    valueStr = str(number);
    if number < 10:
        valueStr = "0"+valueStr;
    return valueStr;

#获取屏幕分辨率
def getScreenResolution():
    app = wx.App();
    screenArr = wx.DisplaySize()
    app.MainLoop();
    return screenArr;

#设置软件透明度
def setScreenTransparent(ev=None):
    scaleValue = scale.get();
    root.attributes('-alpha',scaleValue/100);#半透明

if __name__ == '__main__':
    #屏幕分辨率
    screenArr = getScreenResolution();
    winWidth = screenArr[0];
    winHeight = screenArr[1];
    ###grid布局###
    root = tkinter.Tk();
    root.title("定时关机");
    root.geometry('200x160+'+str(winWidth-230)+'+'+str(winHeight-210));#初始大小与位置
    root.attributes('-topmost',1);#总是在顶端
    root.overrideredirect(True);#不显示标题栏
    #透明度
    fm_scale = Frame(root);
    fm_scale.grid(row=0, column=0, padx=10, pady=5);
    label_t = Label(fm_scale,text="透明度：");
    label_t.grid(row=0, column=0);
    scale = Scale(fm_scale,width=13,length=120,showvalue=0,from_=20,to=100,resolution=1,orient=HORIZONTAL,command=setScreenTransparent);#缩放比例尺
    scale.set(70);#初始值
    scale.grid(row=0, column=1);
    #当前时间
    fm_time = Frame(root);
    fm_time.grid(row=1, column=0, padx=10, pady=0);
    #窗口是否仍在运行
    still = tkinter.IntVar(value=1);
    #显示当前时间
    label_time = Label(fm_time,text="",foreground='blue',font='Helvetica -14 bold');
    label_time.grid(row=0, column=0);
    thread = threading.Thread(target=getDateTime);
    thread.daemon =True;
    thread.start();
    #关机时间
    fm_show = Frame(root);
    fm_show.grid(row=2, column=0, padx=10, pady=5);
    label_s = Label(fm_show,text="定时关机：");
    label_s.grid(row=0, column=0);
    var_s = tkinter.StringVar();
    var_s.set(0);
    entry_s = Entry(fm_show, textvariable=var_s, width=5);
    entry_s.grid(row=0, column=1);
    label_s = Label(fm_show,text="秒");
    label_s.grid(row=0, column=2);
    #提示
    fm_pro = Frame(root);
    fm_pro.grid(row=3, column=0, padx=10, pady=5);
    label_pro = Label(fm_pro,foreground='red',text="关机倒计时： 0 秒",font='Helvetica -14 bold');
    label_pro.grid(row=0, column=2);
    #按钮操作
    fm_but = Frame(root);
    fm_but.grid(row=4, column=0, padx=10, pady=0);
    but_shut = Button(fm_but,text="关机",width=5,command=lambda:countdown(flag='shut'));
    but_shut.grid(row=0, column=3);
    but_shut = Button(fm_but,text="重启",width=5,command=lambda:countdown(flag='rest'));
    but_shut.grid(row=0, column=4);
    but_shut = Button(fm_but,text="终止",width=5,command=stopdown);
    but_shut.grid(row=0, column=5);
    but_shut = Button(fm_but,text="退出",width=5,command=exit);
    but_shut.grid(row=0, column=6);
    
    root.mainloop();