[Idle-dev] Fwd: atexit handler in IDLE?

[Steve Spicklemire]

That would be awesome.... thanks for your help!
-steve

On Jan 16, 2013, at 11:44 PM, Roger Serwy wrote:

> IDLE implicitly runs a script as if you specified "-i" when using regular python from the command line. Perhaps this behavior needs to be documented.
> 
> For what it's worth, this would make the exitfuncs run on the 3.x series:
> 
> diff -r be8e6b81284e Lib/idlelib/run.py
> --- a/Lib/idlelib/run.py        Wed Jan 09 19:00:26 2013 +0100
> +++ b/Lib/idlelib/run.py        Thu Jan 17 00:41:22 2013 -0600
> @@ -381,6 +381,8 @@
>             if jit:
>                 self.rpchandler.interp.open_remote_stack_viewer()
>         else:
> +            import atexit
> +            atexit._run_exitfuncs()
>             flush_stdout()
> 
>     def interrupt_the_server(self):
> 
> 
> 
> On 01/16/2013 08:47 PM, Steve Spicklemire wrote:
>> So how dumb is this? For what it's worth... it works for me.
>> 
>> -steve
>> 
>> aluminum:idlelib steve$ diff -C3  run_orig.py run_new.py
>> *** run_orig.py	 2013-01-16 15:31:08.000000000 -0700
>> --- run_new.py	 2013-01-16 15:30:47.000000000 -0700
>> ***************
>> *** 308,313 ****
>> --- 308,316 ----
>>               if jit:
>>                   self.rpchandler.interp.open_remote_stack_viewer()
>>           else:
>> +             if hasattr(sys,'exitfunc') and sys.exitfunc:
>> +                 sys.exitfunc()
>> +
>>               flush_stdout()
>>          def interrupt_the_server(self):
>> 
>> 
>> On Jan 16, 2013, at 9:17 AM, Roger Serwy wrote:
>> 
>>> Hi Steve,
>>> 
>>> IDLE's subprocess never actually exits, so the atexit handler will not be called. Forcing an exit with sys.exit() will be caught and the subprocess will still not exit.
>>> 
>>> I suggest filing a bug at bugs.python.org.
>>> 
>>> - Roger
>>> 
>>> 
>>> On 01/16/2013 06:50 AM, Steve Spicklemire wrote:
>>>> Hello Idle-dev folks,
>>>> 
>>>> I tried this on the python list, with no luck. ;-(
>>>> 
>>>> I hate to bother you with a basic user question, but I'm not sure where else to go. Is there a better list for this?
>>>> 
>>>> thanks,
>>>> -steve
>>>> 
>>>> Begin forwarded message:
>>>> 
>>>>> From: Steve Spicklemire <steve at spvi.com>
>>>>> Subject: atexit handler in IDLE?
>>>>> Date: January 15, 2013 5:25:34 AM MST
>>>>> To: python-list at python.org
>>>>> Cc: Steve Spicklemire <steve at spvi.com>
>>>>> 
>>>>> Hello Pythonistas!
>>>>> 
>>>>> I'm trying to get this program, which works on the command line, to run correctly in the IDLE environment:
>>>>> 
>>>>> import atexit
>>>>> 
>>>>> print "This is my program"
>>>>> 
>>>>> def exit_func():
>>>>>    print "OK.. that's all folks!"
>>>>> 
>>>>> atexit.register(exit_func)
>>>>> 
>>>>> print "Program is ending..."
>>>>> 
>>>>> 
>>>>> When I run this on the command line I see:
>>>>> 
>>>>> This is my program
>>>>> Program is ending...
>>>>> OK.. that's all folks!
>>>>> 
>>>>> When I run this in IDLE I see:
>>>>> 
>>>>> This is my program
>>>>> Program is ending...
>>>>> 
>>>>> But the atexit handler is never called. ;-(
>>>>> 
>>>>> I tried to fish through the IDLE source to see how the program is actually called, and I decided it looked like it was being invoked with with os.spawnv, but I'm not sure why this would defeat the atexit handler. Anybody know? I'd like to register such a function in my module, but I need it to work in IDLE so that students can easily use it.
>>>>> 
>>>>> thanks!
>>>>> -steve
>>>>> 
>>>>> 
>>>>> 
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