3 Best Ways to Exit a Python Program

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Last Updated on July 15, 2021 by admin

The Command quit(), exit(), sys. Exit() and os._exit() have almost the same functionality as they enhance the SystemExit variant where the Python translator interprets and does not print stack traces 3 exit Python Program.

We can hold the alternative to cut off the original output and perform cleaning tasks; if untrained, the interpreter becomes usual.

3 Best Ways to Exit a Python Program

When running a program in Python, we use all the code in the file, from top to bottom.

Documents usually come out when the interpreter arrives at the end of the file, but we can also request that the program be transparent with built-in exit functions.

Method 1 : Quit()

It only works if the site module is imported and should not be used in the production code.

Production code means that the intended audience uses the code in a real-world context.

It would help if you used this function for interpretation only.

It suggests a variation of SystemExit behind the scenes.

When you print it, it will send a message.


for x in range(1,10):

print(x*10)

quit()

Method 2 : Exist()

exit() only works when the site module has imported and should therefore be used for interpreting only.

It is the same concept of quit() to make Python easier to use.

It also gives the message when it is print.

Import sys


x = 50

if x != 100:

sys.exit(“Values do not match”)

else:

print(“Validation of values completed!!”)

Method 3 : sys.exit ([arg])

Unlike quit() and exit(), sys. Exit() is considered suitable for use in the production code of the sys module and is always available.

The argument for the choice of arg can be a number that gives out or another type of object.

If it is a whole number, zero is considered a successful termination ”. It can also transfer the thread via sys—exit().


for x in range(1,10):

print(x*10)

exit()

Method 4 : os._exit(n)

os._exit() method in Python is used to exit the process in a specified manner without calling the cleaners, blasting studio buffers, etc.

This method usually uses for the child’s process behind the os. Fork() system fence.

The most common way out of this process is sys. Exit (n).

Conclusion

From all of the four exit functions, sys. exit() is preferred because exit() and stop() parts cannot be used in the production code while os._exit() is only in exceptional cases where the immediate exit is required.

Read more: How to drop multiple columns in pandas?

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