Quit function in python program
Question: I have a program that runs in Python, without the console present (which is to
say, I've compiled it using py2exe). I want people to be able to quit from the
main menu, or by a particular key-press in-game (say, Shift+Q). I'm running
it, for now, in Windows, though I am working on compiling Linux/Mac versions.
Pressing the X button works if there's no 'while' loop running, it seems, and
that closes it correctly, otherwise it seems to 'store' the close command wait
until the current loop is closed.

As for menu options, I've looked thoroughly through documentation and
Stackoverflow and tried quit(), exit(), sys.exit() and every combination I can
find, but every time I get:

    
    
    Traceback (most recent call last):
      File "alphatime.pyw", line 61177, in <module>
      File "alphatime.pyw", line 53970, in place_menu
    NameError: global name 'sys' is not defined
    

if I try sys.exit, and then:

    
    
    Traceback (most recent call last):
      File "alphatime.pyw", line 61177, in <module>
      File "alphatime.pyw", line 53970, in place_menu
    NameError: global name 'quit' is not defined
    

if I try just "quit()". I've heard about 'Raising' things like a need to close
the program, but I'm not clear what that means (I'm new to Python) and how I
would go about doing that.

So, my question is two-fold.

Firstly, is there something I can put in loops for recognizing keypresses
something that will recognize the 'X' being clicked, and close?

Secondly, is there an appropriate command that will just close the program? I
cannot figure out why these commands don't work, and I've had quite a few
complaints from people using the program that it crashes, or they have to
ctrl-alt-del it, or whatever. I believe

    
    
    import os
    try:
      os._exit(return_code)
    except:
      pass
    

would work, but at this point, I'm not sure I'm competent enough at python to
deploy it appropriately. Thanks in advance!


Answer: did you by any chance

    
    
    import sys
    

because that should work!

