Running a Program Programatically

Question

Hey there, I hope you are having a good day buddy,

I need to know how do I run a .py file programatically for my first project, So please share a solution. 🙂

Answer 1

Use this to run a .py file programmatically:-

import subprocess
subprocess.run(['python', 'your_script.py'])

It's the safest and most flexible method

Answer 2

Yash Thale , “Safest” means better isolation and no risk of affecting your main program. subprocess runs the script separately, unlike exec() which can mess with your current code

Answer 3

Alhaaz By safest do you mean thread safety ? Or maybe some other kind of safe in programming What I probably don't know ?

Answer 4

Alhaaz Thanks bro, That is really helpful 😄

Answer 5

Alhaaz What's the difference between a subprocess and a thread tho? Or Is it like a subprocess specially is used for safely running dependent scripts ?

Answer 6

Yash Thale

Thread: shares memory with its parent process. lightweight and faster. used for tasks within the same program

Subprocess: has its own memory space. safer and more isolated. used to run separate programs or scripts

Yes, subprocesses are often used to safely run external or dependent scripts without risking the main program

Answer 7

Alhaaz Thank You For your insightful explainations buddy, I wish you all the best for your further journey. Thankyou, bro, You replies really are helpfull alot to me. 🙏😄

Answer 8

Yash Thale Whether or not you need to manually end a subprocess in Python depends on how you start it and whether you wait for it to finish. Here's a quick breakdown:-

subprocess.run(): ends automatically — no manual cleanup needed.

subprocess.Popen(): may need to be ended manually, especially if not waited on.

Answer 9

@Alhaaz

Is there any need to end the subprocess manually or it just ends itself as soon the script is done running ?