通过Python实现电脑定时关机的两种方法

# -*—coding:utf-8 -*-
import sys
import os      # python执行系统命令方法所用到的包
from PyQt5 import QtCore,QtGui,QtWidgets 
 
class Ui_shut(object):   #类 继承object类
	flag = True
	def setupUi(self,shut):  #方法
	    #设置窗体的大小
		shut.setObjectName("shut")
		shut.resize(420,180)             
		shut.setFixedSize(420,180)
 
		self.label = QtWidgets.QLabel(shut)
		self.label.setGeometry(QtCore.QRect(40,50,41,51)) #标签的位置
		self.label.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.label.setObjectName("label")
 
		self.lineEdit = QtWidgets.QLineEdit(shut)
		self.lineEdit.setGeometry(QtCore.QRect(70, 50, 71, 41))
		self.lineEdit.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.lineEdit.setObjectName("lineEdit")
 
		self.label_2 = QtWidgets.QLabel(shut)
		self.label_2.setGeometry(QtCore.QRect(150, 60, 31, 31))
		self.label_2.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.label_2.setObjectName("label_2")
 
		self.lineEdit_2 = QtWidgets.QLineEdit(shut)
		self.lineEdit_2.setGeometry(QtCore.QRect(180, 50, 71, 41))
		self.lineEdit_2.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.lineEdit_2.setObjectName("lineEdit_2")
 
		self.label_3 = QtWidgets.QLabel(shut)
		self.label_3.setGeometry(QtCore.QRect(260, 60, 31, 31))
		self.label_3.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.label_3.setObjectName("label_3")
 
		self.pushButton = QtWidgets.QPushButton(shut,clicked=self.sd)  #为pushButton添加监听事件click。
		self.pushButton.setGeometry(QtCore.QRect(290, 50, 101, 41))
		self.pushButton.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.pushButton.setObjectName("pushButton")
 
		self.label_4 = QtWidgets.QLabel(shut)
		self.label_4.setGeometry(QtCore.QRect(0, 120, 500, 31))
		self.label_4.setFont(QtGui.QFont("Roman times",10,QtGui.QFont.Bold))
		self.label_4.setObjectName("label_4")
 
		self.retranslateUi(shut)
		QtCore.QMetaObject.connectSlotsByName(shut) #connectSlotsByName是一个QMetaObject类里的静态函数，其作用是用来将QObject * o里的子QObject的某些信号按照其objectName连接到o的槽上。
        
 
	def retranslateUi(self,shut):
		_translate = QtCore.QCoreApplication.translate
		shut.setWindowTitle(_translate("shut", "windows定时关机器"))
		self.label.setText(_translate("shut", "在："))
		self.label_2.setText(_translate("shut", "时"))
		self.label_3.setText(_translate("shut", "分"))
		self.label_4.setText(_translate("shut", "    请输入关机时间"))
		self.pushButton.setText(_translate("shut", "设置"))
	def sd(self,shut):        #self.sd为触发该事件后，需要执行的操作。
		h = self.lineEdit.text()
		m = self.lineEdit_2.text()
		if self.flag:
			self.flag = False
			try:                     #捕获所有异常
				os.popen('at'+ h + ':' + m + ' shutdown -s') #Python执行cmd命令的方法
				self.label_4.setText('    设置成功! 系统将关机在今天 '+h+':'+m)
				self.pushButton.setText('移除')
				self.lineEdit.clear()
				self.lineEdit_2.clear()
			except:
				self.label_4.setText('Something is wrong~')
		else:
			self.flag = True
			try:
				os.popen('at /delete /yes')
				self.label_4.setText('成功，全部移除')
				self.pushButton.setText('Set')
				self.lineEdit.clear()
				self.lineEdit_2.clear()
			except:
				self.label_4.setText('Something is wrong')

from tkinter import ttk
import os
import tkinter.messagebox as message_box
 
windows = tkinter.Tk()
windows.title("Python定时关机")
# window 居中
windows.update()  # update window ,must do
curWidth = 280  # get current width
curHeight = windows.winfo_reqheight()  # get current height
scnWidth, scnHeight = windows.maxsize()  # get screen width and height
# now generate configuration infORMation
config = '%dx%d+%d+%d' % (curWidth, curHeight,
                          (scnWidth - curWidth) / 2, (scnHeight - curHeight) / 2)
windows.geometry(config)
# root 容器
root = ttk.LabelFrame(windows, text="关机命令")
root.grid(column=0, row=0, padx=15, pady=15)
# 提醒文本
tkinter.Label(root, text="输入时间").grid(column=0, row=0, sticky=tkinter.W)
tkinter.Label(root, text="选择").grid(column=1, row=0)
 
# 存储输入的值
time = tkinter.StringVar()
unit = tkinter.StringVar()
# 输入框
time_edit = tkinter.Entry(root, width=10, textvariable=time)
time_edit.grid(column=0, row=1, padx=4, sticky=tkinter.W)
time_edit.focus()
# 下拉单位选择
unit_arr = ('时', '分', '秒')
unit_chosen = ttk.Combobox(root, width=6, textvariable=unit, state='readonly')
unit_chosen['values'] = unit_arr
unit_chosen.grid(column=1, row=1)
unit_chosen.current(0)
 
 
def change_edit(to_time):
    time_edit.delete(0, 10)
    time_edit.insert(0, to_time)
    unit_chosen.current(1)
 
 
# start
def start():
    if time.get() and unit.get():
        message_box.showwarning("选择完毕", "你的电脑将在多少 %s %s" % (time.get(), unit.get()))
        # shutdown 的秒数
        count_down_second = int(time.get())
        if unit.get() == 'hour':
            count_down_second *= 3600
        elif unit.get() == 'minute':
            count_down_second *= 60
        # execute
        os.system("shutdown -s -t %s" % count_down_second)
        windows.quit()
 
 
# cancel
def cancel():
    os.system("shutdown -a")
    windows.quit()
 
 
# start 按钮
start_action = tkinter.Button(root, text="START", command=start)
start_action.grid(column=2, row=1)
# 文本
tip_label = tkinter.Label(root, text="倒计时关机")
tip_label.grid(row=2, column=0, pady=2)
# 快捷选择时间
fram = tkinter.Frame(root)
fram.grid(row=3, column=0, columnspan=3)
# 常用的时间
for i in range(2, 7):
    button = tkinter.Button(fram, text=str(i * 15) + "min", command=lambda x=i: change_edit(str(x * 15)))
    button.grid(row=0, column=i - 2, padx=2, pady=2, sticky=tkinter.W)
# cancel 按钮
cancel_action = tkinter.Button(root, text="CANCEL", command=lambda: cancel())
cancel_action.grid(row=4, column=1, pady=10, sticky=tkinter.W)