Run multiple python scripts concurrently

With Bash:

python script1.py &
python script2.py &

That's the entire script. It will run the two Python scripts at the same time.

Python could do the same thing itself but it would take a lot more typing and is a bad choice for the problem at hand.

I think it's possible though that you are taking the wrong approach to solving your problem, and I'd like to hear what you're getting at.

The simplest solution to run two Python processes concurrently is to run them from a bash file, and tell each process to go into the background with the & shell operator.

python script1.py &
python script2.py &

For a more controlled way to run many processes in parallel, look into the Supervisor project, or use the multiprocessing module to orchestrate from inside Python.

I had to do this and used subprocess.

import subprocess

subprocess.run("python3 script1.py & python3 script2.py", shell=True)

I do this in node.js (on Windows 10) by opening 2 separate cmd instances and running each program in each instance.

This has the advantage that writing to the console is easily visible for each script.

I see that in python can do the same: 2 shells.

You can run multiple instances of IDLE/Python shell at the same time. So open IDLE and run the server code and then open up IDLE again, which will start a separate instance and then run your client code.

Adding a wait at the end of the bash script would be advisable, as the script exits when one of the process completes. If we need the script to exit only after all the python process are completed, add a wait at the end of the bash script.

So the script would be

#!/bin/bash
python script1.py ;
python script2.py &
python script3.py &
wait

; at the end of first script is used to run script1 & once finished then start with script2 & script3 in parallel and wait till all of the 3 scripts are completed.