Yeah good idea with names because php ltrim does the same as lstrip in python. Normally I'd expect strip to behave as I proposed, not like input a string as mask of characters, which is more rare use case and confusing in some scenarios. On мар т 24 2019, at 11:34 утра, Anders Hovmöller <bo...@killingar.net> wrote: > I don't see what trim() is good for but I know I've written ltrim() hundreds > of times easy. > > I propose naming them strip_prefix() and strip_suffix() and just skip the one > that does both sides since it makes no sense to me. > > Trim is generally a bad name because what is called strip() in python is > called trim() in other languages. This would be needlessly confusing. > > On 24 Mar 2019, at 09:42, Alex Grigoryev <evr...@gmail.com > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/0?redirect=mailto%3Aevrial%40gmail.com&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D)> > wrote: > > Following the discussion here > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/1?redirect=https%3A%2F%2Flink.getmailspring.com%2Flink%2F7D84D131-65B6-4EF7-9C43-51957F9DFAA9%40getmailspring.com%2F0%3Fredirect%3Dhttps%253A%252F%252Fbugs.python.org%252Fissue36410%26recipient%3DcHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%253D&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D) > > I propose to add 3 new string methods: str.trim, str.ltrim, str.rtrim > > Another option would be to change API for str.split method to work > > correctly with sequences. > > > > In [1]: def ltrim(s, seq): > > ...: return s[len(seq):] if s.startswith(seq) else s > > ...: > > > > In [2]: def rtrim(s, seq): > > ...: return s[:-len(seq)] if s.endswith(seq) else s > > ...: > > > > In [3]: def trim(s, seq): > > ...: return ltrim(rtrim(s, seq), seq) > > ...: > > > > In [4]: s = 'mailto:ma...@gmail.com > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/2?redirect=mailto%3Amaria%40gmail.com&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D)' > > > > In [5]: ltrim(s, 'mailto:') > > Out[5]: 'ma...@gmail.com > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/3?redirect=mailto%3Amaria%40gmail.com&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D)' > > > > In [6]: rtrim(s, 'com') > > Out[6]: 'mailto:maria@gmail.' > > > > In [7]: trim(s, 'm') > > Out[7]: 'ailto:ma...@gmail.co > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/4?redirect=mailto%3Amaria%40gmail.co&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D)' > > _______________________________________________ > > Python-ideas mailing list > > Python-ideas@python.org > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/5?redirect=mailto%3APython-ideas%40python.org&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D) > > https://mail.python.org/mailman/listinfo/python-ideas > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/6?redirect=https%3A%2F%2Fmail.python.org%2Fmailman%2Flistinfo%2Fpython-ideas&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D) > > Code of Conduct: http://python.org/psf/codeofconduct/ > > (https://link.getmailspring.com/link/5181b0db-3b10-4202-90d6-1365aef19...@getmailspring.com/7?redirect=http%3A%2F%2Fpython.org%2Fpsf%2Fcodeofconduct%2F&recipient=cHl0aG9uLWlkZWFzQHB5dGhvbi5vcmc%3D) > > > >
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