Python exit program without error

We can also use the in-built exit function in python to exit and come out of the program in python. It should be used in the interpreter only, it is like a synonym of quit to make python more user-friendly.

In python, sys. It also contains the in-built function to exit the program and come out of the execution process. The sys. After writing the above code python sys. Here, if the marks are less than 20 then it will exit the program as an exception occurred and it will print SystemExit with the argument.

So first, we will import os module. Then, the os. The exit function can be considered as an alternative to the quit function, which enables us to terminate the execution of the program.

By this, we have come to the end of this topic. The exit and quit functions cannot be used in the operational and production codes. They don't have to be inside main. Just write modular functions that you call from main , at the same level. Show 2 more comments. Joseph Holland Joseph Holland 6 6 bronze badges.

You would need to handle the exit in your python program. Output: Enter a value: a exit Just out of curiousity: Why do you want to prevent the message? Yashi Aggarwal Yashi Aggarwal 1 1 silver badge 6 6 bronze badges.

Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Stack Gives Back Abhijit Abhijit 58k 16 16 gold badges silver badges bronze badges. The problem with "return" in case of exceptions is that you won't see any error code on the command line. If you have monitoring systems, they will typically check logs as well as return code of your program, so if the program returns 0 in all cases even errors it can be tricky to maintain.

Not all programs need to produce output for other programs -- sometimes, just being human readable is plenty. That way, you have a single sys. Mike Mike 1 1 gold badge 7 7 silver badges 10 10 bronze badges. Garret45 Garret45 1 1 1 bronze badge. You are essentially not using try-except to handle exceptions anymore, instead using if-else.

Curious, how does it make it better, if it works at all? Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.

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