str.replace is in the opposite situation:
1. People usually want to replace everything. When I search for uses of
replace in code, I can't find any uses of the count parameter.
2. People are more likely to accidentally notice that everything is
being replaced the string being replaced is much more likely to appear
multiple times, because:
1. It can appear anywhere in the string, whereas multiple consecutive
prefixes is unlikely
2. It's often a single character, as opposed to something like a
folder name.
3. I'm speculating here, but I think people are more likely to ask
themselves "what if the string I want to replace appears multiple times"
than "what if the prefix I want to remove appears multiple times in a row".
That's a very edge edge case.
On Wed, Mar 18, 2020 at 8:58 PM Rob Cliffe <rob.cli...@btinternet.com>
wrote:
> Well, str.replace has a count parameter. Presumably people use it (even
> if by accidentally discovering that without it, it replaces all occurrences
> when they only wanted one replaced).
> On 18/03/2020 18:44, Alex Hall wrote:
>
> Just the first occurrence. The vast majority of the time, that's what
> people want to do, and they will usually forget to add a 'count' parameter.
> Many people probably wouldn't even know it exists. It would be disastrous
> if code did the correct thing 99.9% of the time but occasionally silently
> mutilated a string.
>
> On Wed, Mar 18, 2020 at 8:06 PM Rob Cliffe via Python-ideas <
> python-ideas@python.org> wrote:
>
>> Consider that the start or end of a string may contain repetitions of an
>> affix.
>>
>> Should `-+-+-+Spam'.stripprefix('-+') remove just the first occurence?
>> All of them? Does it need a 'count' parameter?
>>
>> [all modulo bikeshedding on the names of course]
>>
>> Rob Cliffe
>>
>> _______________________________________________
>> Python-ideas mailing list -- python-ideas@python.org
>> To unsubscribe send an email to python-ideas-le...@python.org
>> https://mail.python.org/mailman3/lists/python-ideas.python.org/
>> Message archived at
>> https://mail.python.org/archives/list/python-ideas@python.org/message/JMWBL7HILHKZ7JVN2JEH3K5NHQUVFVNZ/
>> Code of Conduct: http://python.org/psf/codeofconduct/
>>
>
_______________________________________________
Python-ideas mailing list -- python-ideas@python.org
To unsubscribe send an email to python-ideas-le...@python.org
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/python-ideas@python.org/message/K4DB6ALHJQUSIPCX3X6RGTBSCHKLR45T/
Code of Conduct: http://python.org/psf/codeofconduct/
