Sorry, I thought I was replying to something from today, not a year ago. My
mail client decided that all old messages I didn’t read at the time were
suddenly brand new additions to the thread, and I didn’t look at the dates. :)
Sent from my iPhone
> On Mar 4, 2020, at 19:21, Andrew Barnert via Python-ideas
> <python-ideas@python.org> wrote:
>
>
>> On Mar 30, 2019, at 12:30, MRAB <pyt...@mrabarnett.plus.com> wrote:
>>
>> I'd much prefer .lcut/.rcut to .cut_prefix/.cut_suffix, to match
>> .lstrip/.rstrip.
>
> I agree that we should use either l/r or something to do with start/end. We
> already have two different ways to say left/start and right/end on the str
> methods; adding a third way to say left/start/prefix seems silly.
>
> But I don’t like cut. Or trim, or any of the other options. They’re all just
> synonyms for strip; there’s nothing about any of these synonyms that tells
> you, implies, or even helps you remember that strip takes an iterable of
> characters and cut takes a substring (or is that a substring or tuple of
> substrings?) instead of the other way around.
>
> A name like lstrip_string would solve that.
>
> But so would modifying lstrip to take keyword arguments:
>
> s.lstrip("abc") # same as today
> s.lstrip(chars="abc") # same as above
> s.lstrip(string="abc") # the new functionality: only strip the whole thing
>
> Also, this means that if we do want the substring-or-substrings thing, we
> don’t have to use the old tuple idiom; since it’s a keyword-only param, we
> could just as easily have a different keyword param that accepts any iterable
> of strings. So when you have a set of prefixes, you don’t have to call
> s.lcut(tuple(prefixes)), you just pass the set as-is to
> s.lstrip(strings=prefixes)).
>
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