python 3.4 - os.system不执行命令

Question

我有一些代码使用python创建一个锁定屏幕，删除任务栏并阻止他们离开。 但是，当他们获得正确的密码时，它不会使任务栏返回。 该命令在cmd中工作，但在python中不起作用。

这是代码：

import os
from tkinter import*
import time
run = input("Do you want to lock your computer? ")
if run == "yes":
    a=Tk()
    a.overridedirect(1)
    w, h = a.winfo_screenwidth(), a.winfo_screenheight()
    a.geometry("%dx%d+0+0" % (w, h))
    os.system('taskkill /f /im  explorer.exe')
    a.attributes("-topmost", True)
    L1 = Label(a, text="Please enter the password to continue: ")
    L1.pack( side =TOP)
    Ebox = Entry(a, bd =5)
    Ebox.pack(side =TOP)
    Ebox.config(show="*");

    def check():
    if Ebox.get() == "password":
        time.sleep(0.3)
        os.system('powershell -command "Invoke-item c:\windows/explorer.exe"') # This line does not execute the command
        a.destroy()


    b = Button(a, text="submit", command=check )
    b.pack(side=TOP)
    a.mainloop()

Answer 1

清理完代码后，它对我有用：

import os
from tkinter import*
import time

run = input("Do you want to lock your computer? ")
if run == "yes":
    a=Tk()
    a.overrideredirect(1)
    w, h = a.winfo_screenwidth(), a.winfo_screenheight()
    a.geometry("%dx%d+0+0" % (w, h))
    os.system('taskkill /f /im  explorer.exe')
    a.attributes("-topmost", True)
    L1 = Label(a, text="Please enter the password to continue: ")
    L1.pack( side =TOP)
    Ebox = Entry(a, bd =5)
    Ebox.pack(side =TOP)
    Ebox.config(show="*");

    def check():
      print("Hello")
      typed=Ebox.get()
      print(typed)
      if typed == "password":
        time.sleep(0.3)
        print("Ok")
        os.system('powershell -command "invoke-item c:\windows/explorer.exe"') # this line does not execute the command
        a.destroy()

    b = Button(a, text="submit", command=check)
    b.pack(side=TOP)

    a.mainloop()