Make a Python Script that can run two python scripts concurrently

Question

I have two python programs that I want to run. I want to make a python script which execute the two scripts concurrently. How can I do that?

• NotAnAmbiTurner: You would need more than one processor. You could then run multiple processes concurrently (docs.python.org/3.7/library/multiprocessing.html). You might actually want multithreading depending on what you're trying to do (medium.com/@nbosco/…).
• martineau: @NotAnAmbiTurner: You don't need more than one processor, just an OS that supports multitasking.
• NotAnAmbiTurner: @martineau but then is it truly concurrent?
• martineau: @NotAnAmbiTurner: No, technically not—but depending on what the tasks are actually doing it may not matter. i.e. Such as when one is doing I/O and therefore spending a lot of its time waiting for physical devices. multitasking would prevent that from hanging the entire system down.
• Armster: But is there a script to run two python scripts concurrently?

Answer 1

import os
import threading
def start():
 os.system('python filename.py')
t1 = threading.Thread(target=start)
t2 = threading.Thread(target=start)
t1.start()
t2.start()

Answer 2

You can also use a ThreadPoolExecutor from the concurrent.futures library and be more flexible on how many workers should be spawned to execute your target script. Something like this should just fine:

from concurrent.futures import ThreadPoolExecutor as Pool
import os
n_workers = 2
def target_task():
 os.system("python /path/to/target/script.py")
def main(n_workers):
 executor = Pool(n_workers)
 future = executor.submit(target_task)
if __name__ == "__main__":
 main(n_workers=n_workers)

This way you won't have to start your threads manually.