On Wed, 29 Aug 2007 08:58:52 +0000, xavim wrote:
> I am having some problems with how to do proper error handling.
> One of the requirements is that the destination file should not be
> created if there is any error in the processing.
>
> I have come out with the following code::
>
> dictfile = file(dictpath, 'w')
> try:
> try:
> dictgen(dictfile, *sources)
> finally:
> dictfile.close()
> except error, e:
> os.remove(dictpath)
> sys.exit(str(e))
> except:
> os.remove(dictpath)
>
> but it appears to me as somewhat ugly. Is there any more Pythonic
> way to abstract this kind of error handling? Maybe 'with' or
> decorators could be useful here?
With ``with`` you can get rid of the inner ``try``/``finally``:
dictfile = open(dictpath, 'w')
try:
with dictfile:
dictgen(dictfile, sources)
except error, e:
os.remove(dictpath)
sys.exit(str(e))
except:
os.remove(dictpath)
raise
Ciao,
Marc 'BlackJack' Rintsch
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