On 22/02/2014 16:36, Brett Cannon wrote:
On Sat, Feb 22, 2014 at 4:13 AM, Antoine Pitrou <solip...@pitrou.net
<mailto:solip...@pitrou.net>> wrote:
On Fri, 21 Feb 2014 09:37:29 -0800
Guido van Rossum <gu...@python.org <mailto:gu...@python.org>> wrote:
> I'm put off by the ':' syntax myself (it looks to me as if
someone forgot a
> newline somewhere) but 'then' feels even weirder (it's been
hard-coded in
> my brain as meaning the first branch of an 'if').
Would 'else' work rather than 'then'?
thing = stuff['key'] except KeyError else None
That reads to me like the exception was silenced and only if there is
no exception the None is returned, just like an 'else' clause on a
'try' statement.
I personally don't mind the 'then' as my brain has been hard-coded to
mean "the first branch of a statement" so it's looser than being
explicitly associated with 'if' but with any multi-clause statement.
I read *except* as 'except if', and *:* as 'then' (often), so the main
proposal reads naturally to me. I'm surprised to find others don't
also, as that's the (only?) pronunciation that makes the familiar
if-else and try-except constructs approximate English.
Isn't adding a new keyword (*then*) likely to be a big deal? There is
the odd example of its use as an identifier, just in our test code:
http://hg.python.org/cpython/file/0695e465affe/Lib/test/test_epoll.py#l168
http://hg.python.org/cpython/file/0695e465affe/Lib/test/test_xmlrpc.py#l310
Jeff Allen
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