On Tue, 17 Mar 2015 12:13 am, Marko Rauhamaa wrote:
> If I get an iterator from a black box source, I don't know if I'm
> allowed/supposed to call close() on it.
In no particular order:
#1
if hasattr(some_iterator, 'close'):
some_iterator.close()
#2
close = getattr(some_iterator, 'close', None)
if close is not None:
close()
#3
try:
close = some_iterator.close
except AttributeError:
pass
else:
close()
#4 (The most pythonic solution of all.)
If you want to call close(), for some reason, *make it part of your API* and
insist that whatever object is passed to you supports close(), or else it
is an error.
--
Steven
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