[Python-ideas] Descouraging the implicit string concatenation

[Robert Vanden Eynde]

Le mer. 14 mars 2018 à 18:04, Carl Meyer <carl at oddbird.net> a écrit :

> On 3/14/18 8:03 AM, Guido van Rossum wrote:
> > I use the feature regularly for long error messages, and when combined
> > with .format() or % it's not so easy to replace it with a + (it would
> > require adding parentheses).
> >
> > So I am against formally discouraging it or adding something to PEP 8.
> >
> > However linters could warn about lists of comma-separated strings with a
> > missing comma.
>
> +1 to all of this.
>
> It's possible to write a linter rule that will reliably catch the
> potential missing-comma errors, while still allowing implicit string
> concatenation where it's useful and readable. The rule is that implicit
> string concatenation should only be disallowed if there are any commas
> present at the same "parenthesization level". Thus, this is allowed:
>
>     raise SomeException(
>         "This is a really long exception message "
>         "which I've split over two lines."
>     )
>
> While both of these are disallowed:
>
>     fruits = [
>         'orange',
>         'grape'
>         'banana',
>     ]
>
>     some_str.replace(
>         "This is a long string "
>         "split over two lines.",
>         "And this is another string."
>     )
>
>
+1... if this is indeed implemented in a linter !
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