[Python-Dev] converting the stdlib to str.format

[Guido van Rossum]

+1

On 6/6/08, Steve Holden <steve at holdenweb.com> wrote:
> Nick Coghlan wrote:
>> Greg Ewing wrote:
>>> Nick Coghlan wrote:
>>>
>>>> - remove support for passing a single value to a format string
>>>> without wrapping it in an iterable first
>>>
>>> But won't that clobber a large number of the simple
>>> use cases that you want to keep %-formatting for?
>>
>> Note the part of the proposal that allows *any* iterable on the right
>> hand side rather than the current insistence on a tuple. So the
>> single-value use cases can be boxed easily with a list.
>>
>> To my mind salvaging %-formatting requires removing the ambiguity over
>> whether or not the right hand side will be iterated over.
>>
> But then this breaks code where iterables are intended to be output
> using a single %s format specifier, for example. I don't see why this
> would be regarded as helpful. To avoid breakage I'd rather keep the
> %-formatting ability as it is, and label it a legacy feature, rather
> than "salvaging" it. It's going to be too tricky to convert using 2to3
> otherwise.
>
> regards
>   Steve
> --
> Steve Holden        +1 571 484 6266   +1 800 494 3119
> Holden Web LLC              http://www.holdenweb.com/
>
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