无法检测 Calc.exe 是否正在运行 - Python

Question

I am trying to open a window application when it is not opened in the background. To do that, I need to check if the process is running in the background. I am using pymen to check if the calc.exe is running, and if it's not, I will use subprocess to open a new calc.exe window. However, the code that I am using is not detecting if my calc.exe is actually running or not. It will always be Calculator is Not Running...

from pymem import Pymem

try:

    pm = Pymem('calc.exe')
    print('Calculator Started And Is Running....')

except:

    print ('Calculator Is Not Running....')

I believe that the code is going through the details tab as shown as below to check if calc.exe is running or not. However, I can't find it in here as well even though the calculator app is running.

The detail tab in Task Manager

App like Notepad and Chrome are working fine but calculator. I have no idea why it is not working for calculator.

Answer 1

From Microsoft Calculator Windows 10 :

The Calculator in non-LTSC editions of Windows 10 is a Universal Windows Platform app . In contrast, Windows 10 LTSC (which does not include universal Windows apps ) includes the traditional calculator, but which is now named win32calc.exe . … Both the universal Windows app and LTSC's win32calc.exe register themselves with the system as handlers of a ' calculator: ' pseudo-protocol. …
All Windows 10 editions (both LTSC and non-LTSC) continue to have a calc.exe , which however is just a stub that launches (via ShellExecute ) the handler that is associated with the ' calculator: ' pseudo-protocol.

In other words, calc.exe is merely a wrapper which launches another executable:

import psutil
import subprocess
import time


def list_calc(phase):
    print(phase)
    for proc in psutil.process_iter():
        if proc.name().startswith( PROCNAME):
            print( proc.name())
            print( proc.cmdline()[0])
            if proc.name() == 'CalculatorApp.exe':
                proc.kill()


PROCNAME = 'Calc'

list_calc('- before:')

calc = subprocess.Popen([PROCNAME+'.exe'])
time.sleep(3) # wait until calculator window appears

list_calc('- after:')

Result : ver &&.\SO\75191242.py

 Microsoft Windows [Version 10.0.19045.2486] - before: - after: CalculatorApp.exe C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_11.2210.0.0_x64__8wekyb3d8bbwe\CalculatorApp.exe