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which python trick or hack you know that you would want to share? (lemmy.ca)

submitted 5 months ago by kionite231@lemmy.ca to c/programming@programming.dev

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[–] SpeakinTelnet@sh.itjust.works 58 points 5 months ago (5 children)

My secret to high uptime:

while True:
    try:
        main()
    except:
        pass

[–] kionite231@lemmy.ca 9 points 5 months ago

that was hilarious xD

[–] alexdeathway@programming.dev 4 points 5 months ago

Flask developer?

[–] Phegan@lemmy.world 4 points 5 months ago

Someone is absolutely going to think this is a real recommendation and do it.

[–] CallMeButtLove@lemmy.world 3 points 5 months ago (3 children)

Lurking beginner here, why is this bad?

[–] LKC@sh.itjust.works 24 points 5 months ago

Basically sweeps errors under rug.

No error handling and go again.

[–] SpeakinTelnet@sh.itjust.works 13 points 5 months ago (1 children)

There you go:

# Start an infinite loop because True will always be True
while True: 
    # try to run the main function, usually where everything happens
    try:
        main()
    # in the case an exception is raised in the main function simply discard (pass) and restart the loop
    except:
        pass

[–] CallMeButtLove@lemmy.world 2 points 5 months ago

Thank you for that answer! That makes sense.

[–] ResoluteCatnap@lemmy.ml 4 points 5 months ago

This gives some better context. https://stackoverflow.com/questions/21553327/why-is-except-pass-a-bad-programming-practice

But essentially ignoring every single error a program could generate is not great. It'd be better to know what those errors are and fix/prevent them from occurring in the first place.