Thanks for the pointers to emails.
Ethan Furman: "This is why replace() still only takes a single
substring to match and this isn't supported: (...)"
Hum ok, it makes sense. I agree that we can start with only accepting
str (reject tuple), and maybe reconsider the idea of accepting a tuple
of str later.
Please move the idea in Rejected Ideas, but try also to summarize the
reasons why the idea was rejected. I saw:
* surprising result for empty prefix/suffix
* surprising result for "FooBar text".cutprefix(("Foo", "FooBar"))
* issue with unordered sequence like set: only accept tuple which is ordered
* str.replace() only accepts str.replace(str, str) to avoid these
issues: the idea of accepting str.replace(tuple of str, str) or
variant was rejected multiple times. XXX does someone have references
to past discussions? I found https://bugs.python.org/issue33647 which
is a little bit different.
You may mention re.sub() as an existing efficient solution for the
complex cases.
I have to confess that I had to think twice when I wrote my example
line.cutsuffix(("\r\n", "\r", "\n")). Did I write suffixes in the
correct order to get what I expect? :-) "\r\n" starts with "\r".
Victor
Le mer. 25 mars 2020 à 01:44, Dennis Sweeney
<[email protected]> a écrit :
>
> There were at least two comments suggesting keeping it to one affix at a time:
>
> https://mail.python.org/archives/list/[email protected]/message/GPXSIDLKTI6WKH5EKJWZEG5KR4AQ6P3J/
>
> https://mail.python.org/archives/list/[email protected]/message/EDWFPEGQBPTQTVZV5NDRC2DLSKCXVJPZ/
>
> But I didn't see any big objections to the rest of the PEP, so I think maybe
> we keep it restricted for now.
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