[Python-ideas] One way to do format and print

[Rob Cliffe]

I use %-formatting.
Not because I think it's so wonderful and solves all problems (although 
it's pretty good), but because it appeared to be the recommended method 
at the time I learned Python in earnest.  If I were only learning Python 
now, I would probably learn str.format or whatever it is.
I *could* learn to use something else *and* change all my working code, 
but do you really want to force me to do that?
I would guess that there are quite a lot of Python users in the same 
position.
Rob Cliffe

On 09/09/2015 17:05, Sven R. Kunze wrote:
> On 09.09.2015 02:09, Andrew Barnert via Python-ideas wrote:
>> I think it's already been established why % formatting is not going 
>> away any time soon.
>>
>> As for de-emphasizing it, I think that's already done pretty well in 
>> the current docs. The tutorial has a nice long introduction to 
>> str.format, a one-paragraph section on "old string formatting" with a 
>> single %5.3f example, and a one-sentence mention of Template. The 
>> stdtypes chapter in the library reference explains the difference 
>> between the two in a way that makes format sound more attractive for 
>> novices, and then has details on each one as appropriate. What else 
>> should be done?
>
> I had difficulties to find what you mean by tutorial. But hey, being a 
> Python user for years and not knowing where the official tutorial 
> resides...
>
> Anyway, Google presented me the version 2.7 of the tutorial. Thus, the 
> link to the stdtypes documentation does not exhibit the note of, say, 
> 3.5:
>
> "Note: The formatting operations described here exhibit a variety of 
> quirks that lead to a number of common errors (such as failing to 
> display tuples and dictionaries correctly). Using the newer 
> str.format() interface helps avoid these errors, and also provides a 
> generally more powerful, flexible and extensible approach to 
> formatting text."
>
> So, adding it to the 2.7 docs would be a start.
>
>
> I still don't understand what's wrong with deprecating %, but okay. I 
> think f-strings will push {} to wide-range adoption.
>
>
> Best,
> Sven
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