Python base python os._exit () Sys.exit () exit () Difference

There are two ways that Python exits a program: Os._exit (), Sys.exit ()

1) os._exit () exits the Python program directly, and the subsequent code will not continue to execute.

2) Sys.exit () throws a systemexit exception, and if the exception is not caught, the Python interpreter exits directly, and catching this exception can do some extra cleanup work. 0 for normal exit, other values (1-127) are not normal, can throw abnormal events for capture.

Exit () should be the same as exit () in other languages such as C language.

Os._exit () invokes the C-language _exit () function.
__builtin__.exit is a quitter object, and the __call__ method of the object throws a Systemexit exception.

Generally os._exit () is used to exit in the thread
Sys.exit () is used to exit from the main thread.

Python base python os._exit () Sys.exit () exit () Difference