Restarting a program after exception

Question

I have a program that queries an API every few seconds. Each response triggers a few functions which themselves make some calls to websites and such -- calls that I don\'t w

Answer 1

First make two files.

One file called run.py and one called forever.py and put them in the same folder.

Go to your terminal within that folder and type chmod +x forever.py

run.py

whatever code you want to run

forever.py

#!/usr/local/lib/python3.7
from subprocess import Popen
import sys

filename = sys.argv[1]
while True:
    print("\nStarting " + filename)
    p = Popen("python3 " + filename, shell=True)
    p.wait()

Open a terminal window from the folder and type this:

python3 ./forever.py retweet.py

to start run.py and if it fails or has an exception, it'll just start over again.

You now have a template to make sure if a file crashes or has an exception, you can restart it without being around. If this helps you, please give me a vote!