atexit module not working

[Larry_Mondello]

Even the simple examples in the Standard Library docs for the atexit module do not seem to work in Pythonista.

[omz]

It's not possible to make this work on iOS. The interpreter has to run in the same process as the app, so it never terminates...

[MTcoder]

@omz atexit seems to work fine in Pythonista 3 -- is it true? Has this issue been solved?

[JonB]

atexit was added in pythonista 2.1/3.0, although it only is called when sys.exit is called, not when pythonista closes, if memory serves

[Webmaster4o]

@MTcoder Now the python interpreter runs in a separate process, that's why

[towerofnix]

I'm on Pythonista 3 and atexit.register on its own doesn't quite work - running sys.exit will call the registered atexit function but forcibly terminating the program (via the stop button) doesn't do that.

Using a try..finally like this, worked, though:

@atexit.register
def _exitcb():
  print('Exit')

try:
  # Do stuff
finally:
  exit()

I'm not sure if that's how it would normally work on a computer running Python but that's just a tiny tidbit of hopefully helpful information for anyone coming across this issue.