[Python-Dev] cpython: Rename contextlib.ignored() to contextlib.ignore().
Ethan Furman
ethan at stoneleaf.us
Wed Oct 16 00:41:33 CEST 2013
On 10/15/2013 12:59 PM, Tim Delaney wrote:
> On 16 October 2013 05:17, Alexander Belopolsky <alexander.belopolsky at gmail.com <mailto:alexander.belopolsky at gmail.com>>
> wrote:
>
> On Tue, Oct 15, 2013 at 12:45 PM, Ethan Furman <ethan at stoneleaf.us <mailto:ethan at stoneleaf.us>> wrote:
> > with trap(OSError) as cm:
> > os.unlink('missing.txt')
> > if cm.exc:
> > do_something()
>
> .. and why is this better than
>
> try:
> os.unlink('missing.txt')
> except OSError as exc:
> do_something()
>
>
> It would allow you to perform a series of operations then process the any exceptions all together e.g.
>
> with trap(OSError) as cm1:
> os.unlink('missing.txt')
>
> with trap(OSError) as cm2:
> os.unlink('other_missing.txt')
>
> with trap(OSError) as cm3:
> os.unlink('another_missing.txt')
>
> for cm in (cm1, cm2, cm3):
> if cm.exc:
> do_something(cm.exc)
As long as we're having fun ;)
trap_os = suppress(OSError)
dead_files = ('missing.txt', 'other_missing.txt', 'actually_here.txt')
for file in dead_files:
with trap_os:
os.unlink(missing.txt)
for exc in trap_os.suppressed_exceptions:
do_something(exc)
--
~Ethan~
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