[BangPypers] How to run a block of code just before the interpreter is being exited like END{} in perl ??

[Anand B Pillai]

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On Tuesday 03 September 2013 06:27 AM, Anand Chitipothu wrote:
>> This is another version of this by mucking around directly with
>> sys.exitfunc using a with context.
>> 
>> from contextlib import contextmanager
>> 
>> @contextmanager def end_of_days(): def wrapper(): print
>> 'Goodbye.' yield wrapper
>> 
>> with end_of_days() as sys.exitfunc: print 3+4
>> 
> 
> How is this different from:
> 
> import sys def goodbye(): print "Goodbye"
> 
> sys.exitfunc = goodbye
> 
> I don't think we are really doing anything with the context in your
> example except initializing sys.exitfunc.


Well, nothing really except maybe,

@contextmanager
def end_of_days():
    before_context()
    def wrapper():
        print 'Goodbye.'
    yield wrapper
    print after_context()

with end_of_days() as sys.exitfunc:
    print 3+4

Just provides a context manager as well to do things
before entering context and after exiting (just before
sys.exit in this case), in a modular way.

> 
> Anand _______________________________________________ BangPypers
> mailing list BangPypers at python.org 
> http://mail.python.org/mailman/listinfo/bangpypers
> 


- -- 
Regards,

- --Anand

-
--------------------------------------------------------------------------------------
Software Architect/Consultant
anandpillai at letterboxes.org

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