[Python-ideas] Allowing comments after line continuations

[Ryan Hiebert]

I'd like it if comments and/or white space could follow the \. Trailing white space after one is always difficult to notice, and the comment after the line continuation is a compelling use-case. Together, we'll have a bit less error prone line continuation syntax.
—
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On Thu, May 16, 2013 at 7:45 PM, Bruce Leban <bruce at leapyear.org> wrote:

> On May 16, 2013 5:05 PM, "Terry Jan Reedy" <tjreedy at udel.edu> wrote:
>> To me, having the \ below escape the newline that occurs 60 characters
> later is 'counter-intuitive'.
>>
>> a + \ # a very long comment that seems to go on and on forever
>>
>> The \ where it is looks to me like a stray typo and a bug. I would be
> less surprised if the code below worked, so my counter-proposal is that \
> escaping of newline work after comments.
>>
>> >>> 1 + # current behavior \
>> SyntaxError: invalid syntax
>>
>> >>> 1 + # proposed behavior \
>>     2
>> 3
>>
>> >>>
>>
>> > and less-than-useful behaviour, which IMO it does.
>>
>> Useful is a different issue. My counte-proposal meets the goal of mixing
> comments with line-continuation.
> My objection to this is that it changes meaning of current code while my
> proposal doesn't. It also changes rule that everything after # is ignored.
> Simple example:
>     x = y,   # \
>     z = 1, 2
> Admittedly contrived but I spent no time trying to get a less-contrived
> example.
> --- Bruce
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