[Python-ideas] except expression

[Jan Kaliszewski]

20.02.2014 16:24, MRAB wrote:

> On 2014-02-20 14:46, Rob Cliffe wrote:
>>
>> On 20/02/2014 13:45, M.-A. Lemburg wrote:
>>> On 20.02.2014 02:18, Chris Angelico wrote:
>>>> On Thu, Feb 20, 2014 at 11:15 AM, Ethan Furman 
>>>> <ethan at stoneleaf.us> wrote:
>>>>> result = 1/x except ZeroDivisionError -> NaN
>>>>>
>>>>> For the record, I could just as easily live with the colon 
>>>>> instead of the
>>>>> arrow.
>>>>>
>>>> Time to open up this branch of the discussion... colon or arrow?
>>>>
>>>> For the purposes of this debate, I'm comparing these two 
>>>> notations,
>>>> and nothing else:
>>>>
>>>> result = 1/x except ZeroDivisionError -> NaN
>>>> result = 1/x except ZeroDivisionError: NaN
>>> I'm -1 on both of them.
>> I'm afraid answering your post will mean repeating stuff said 
>> earlier in
>> this thread, but here goes:
>>> The colon should stay reserved for starting new blocks of 
>>> statements.
>> It isn't reserved for that - it is already used for slices, 
>> dictionary
>> literals and lambdas.
>
> It should be said that slices and dict literals do "enclose" the 
> colon,
> the first with in[...] and the second within {...}.
>
> @Marc-Andre: Would it be better if the expression containing the 
> except
> clause were enclosed in (...), e.g. "result = (1/x except
> ZeroDivisionError: NaN)" rather than "result = 1/x except
> ZeroDivisionError: NaN"?

+1

Cheers.
*j