Python 3 run two applcations in windows parallel

Question

one question: I want to run two different exe files parallel (Windows). All my tests starts the two applications, but one after the other (after closing the application). What's wrong?

import threading
import subprocess
import os.path

def Worker(aPrg):
    _, name = os.path.split(aPrg)
    if os.path.isfile(aPrg):
        lExe = []
        lExe.append(aPrg)
        print('Start: ' + name)
        lResult = subprocess.call(lExe)
    else:
        print('ERROR: ' + name + ' not available!')
    return

def main():
    t1 = threading.Thread(target=Worker('C:\\windows\\notepad.exe'))
    t2 = threading.Thread(target=Worker('c:\\windows\\explorer.exe'))
    t1.start()
    t2.start()

if __name__ == '__main__':
        main()

Thanks for all ideas!

Geosucher

score 0 · Answer 1 · edited May 23 '17 at 12:26

The reasons for this problem is discussed here : Python threading appears to run threads sequentially

This should help you:

import subprocess
import os.path
import multiprocessing

def Worker(aPrg):
    _, name = os.path.split(aPrg)
    if os.path.isfile(aPrg):
        lExe = []
        lExe.append(aPrg)
        print('Start: ' + name)
        lResult = subprocess.call(lExe)
    else:
        print('ERROR: ' + name + ' not available!')
    return

def main():
    p = multiprocessing.Pool(2)
    p.map(Worker, ('c:\\windows\\explorer.exe','c:\\windows\\explorer.exe'))

if __name__ == '__main__':
        main()

Thank you! it works fine. I observed that another posiibility is to use Popen instead of call. — Geosucher, May 05 '17 at 09:42

Python 3 run two applcations in windows parallel

1 Answers1