Re: [Python-ideas] Dart like multi line strings identation

On 2018-04-02 11:40, MRAB wrote: OTOH, it's not like it's causing a problem. Well, not a big one, but there are arguments for keeping a language as simple as possible. Also every time an idea comes up for a string prefix, the combinatorial issue comes up again.  If we could factor out an

Re: [Python-ideas] Dart like multi line strings identation

On 2018-04-02 10:53, Michel Desmoulin wrote: Le 02/04/2018 à 07:09, Mike Miller a écrit : On 2018-04-01 05:36, Steven D'Aprano wrote: You are right that many of the prefixes can be handled by the same code: rfd rfD rFd rFD rdf rdF rDf rDF Rfd RfD RFd RFD Rdf RdF RDf RDF frd

Re: [Python-ideas] Dart like multi line strings identation

On 2 April 2018 at 23:06, Steven D'Aprano wrote: > On Mon, Apr 02, 2018 at 12:08:47PM +, Steve Barnes wrote: > >> This would reflect that, typically, a specific developer tends to want >> either all or no multi-line text strings dedented. > > I don't know how you come to

Re: [Python-ideas] Dart like multi line strings identation

On Mon, Apr 02, 2018 at 12:08:47PM +, Steve Barnes wrote: > This would reflect that, typically, a specific developer tends to want > either all or no multi-line text strings dedented. I don't know how you come to that conclusion. I certainly would not want "All or Nothing" when it comes to

Re: [Python-ideas] Dart like multi line strings identation

On 01/04/2018 02:48, Steven D'Aprano wrote: > On Sun, Apr 01, 2018 at 02:20:16AM +0100, Rob Cliffe via Python-ideas wrote: > >>> New unordered 'd' and 'D' prefixes, for 'dedent', applied to multiline >>> strings only, would multiply the number of alternatives by about 5 and >>> would require

Re: [Python-ideas] Dart like multi line strings identation

Le 02/04/2018 à 07:09, Mike Miller a écrit : > > On 2018-04-01 05:36, Steven D'Aprano wrote: >> You are right that many of the prefixes can be handled by the same code: >> >> rfd rfD rFd rFD rdf rdF rDf rDF >> Rfd RfD RFd RFD Rdf RdF RDf RDF >> frd frD fRd fRD fdr fdR fDr fDR >>   

Re: [Python-ideas] Dart like multi line strings identation

On 2018-04-01 05:36, Steven D'Aprano wrote: You are right that many of the prefixes can be handled by the same code: rfd rfD rFd rFD rdf rdF rDf rDF Rfd RfD RFd RFD Rdf RdF RDf RDF frd frD fRd fRD fdr fdR fDr fDR Frd FrD FRd FRD Fdr FdR FDr FDR drf drF dRf dRF dfr dfR

Re: [Python-ideas] Dart like multi line strings identation

On 2018-04-01 20:10, Terry Reedy wrote: On 4/1/2018 8:36 AM, Steven D'Aprano wrote: On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: One comment about the 'combinatorial explosion' is that it sort of assumes that each individual combination case needs to be handled with distinct

Re: [Python-ideas] Dart like multi line strings identation

On 4/1/18 4:31 PM, Brendan Barnwell wrote: > On 2018-04-01 05:36, Steven D'Aprano wrote: >> On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: >> >>> One comment about the 'combitorial explosion' is that it sort of >>> assumes >>> that each individual combination case needs to be

Re: [Python-ideas] Dart like multi line strings identation

On 2018-04-01 05:36, Steven D'Aprano wrote: On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: One comment about the 'combitorial explosion' is that it sort of assumes that each individual combination case needs to be handled with distinct code. No -- as I said in an earlier

Re: [Python-ideas] Dart like multi line strings identation

On Mon, Apr 2, 2018 at 5:25 AM, Marius Räsener wrote: > Actually I‘d rather like to see Python develop backwards and remove string > literals and not getting even more ... so maybe just `r` and `b`? Yeah, that's not gonna happen :) ChrisA

Re: [Python-ideas] Dart like multi line strings identation

On 4/1/18 8:36 AM, Steven D'Aprano wrote: > On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: > >> One comment about the 'combitorial explosion' is that it sort of assumes >> that each individual combination case needs to be handled with distinct >> code. > No -- as I said in an

Re: [Python-ideas] Dart like multi line strings identation

Hey again, Thx all for the active discussion. Since I‘m the OP and though want to make clear that I didn‘t had a `d` string literal in mind. So the Idea was to support this just as default, with any more effords to support it I don‘t see a real advantage or that I‘d think it is ‚solved‘. So

Re: [Python-ideas] Dart like multi line strings identation

On 4/1/2018 8:36 AM, Steven D'Aprano wrote: On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: One comment about the 'combinatorial explosion' is that it sort of assumes that each individual combination case needs to be handled with distinct code. No -- as I said in an earlier

Re: [Python-ideas] Dart like multi line strings identation

On 4/1/2018 8:55 AM, Chris Angelico wrote: On Sun, Apr 1, 2018 at 10:36 PM, Steven D'Aprano wrote: And that *mental complexity* is (in my opinion) the biggest issue with adding a new d-prefix, and why I would rather make it a method. Another big advantage of a method is

Re: [Python-ideas] Dart like multi line strings identation

On Sun, Apr 1, 2018 at 10:36 PM, Steven D'Aprano wrote: > And that *mental complexity* is (in my opinion) the biggest issue with > adding a new d-prefix, and why I would rather make it a method. > > Another big advantage of a method is that we can apply it to > non-literals

Re: [Python-ideas] Dart like multi line strings identation

On Sun, Apr 01, 2018 at 08:08:41AM -0400, Richard Damon wrote: > One comment about the 'combitorial explosion' is that it sort of assumes > that each individual combination case needs to be handled with distinct > code. No -- as I said in an earlier post, Terry and I (and Eric) are talking

Re: [Python-ideas] Dart like multi line strings identation

Hi, On 03/31/2018 09:47 PM, Terry Reedy wrote: > With no padding, I would not argue with someone who prefers > textwrap.dedent, but dedent cannot add the leading space. Couldn't one use use the 'indent' method on the 'textwrap' module for that purpose? Thanks, --francis

Re: [Python-ideas] Dart like multi line strings identation

On 4/1/18 5:11 AM, Eric V. Smith wrote: > On 3/31/2018 9:48 PM, Steven D'Aprano wrote: >> On Sun, Apr 01, 2018 at 02:20:16AM +0100, Rob Cliffe via Python-ideas >> wrote: >> New unordered 'd' and 'D' prefixes, for 'dedent', applied to multiline strings only, would multiply the number of

Re: [Python-ideas] Dart like multi line strings identation

A "d" prefix to do textwrap.dedent is something I wished for a long time. It's like the "f" one: we already can do it, be hell is it convenient to have a shortcut. This is especially if, like me, you take a lot of care in the error messages you give to the user. I write a LOT of them, very long,

Re: [Python-ideas] Dart like multi line strings identation

On 1 April 2018 at 19:24, Chris Angelico wrote: > Since the entire point of the Py3 u"..." prefix is compatibility with > Py2, the semantics have to be retained. There's no point supporting > ur"..." in Py3 if it's not going to produce the same result as in Py2. Right, "ur"

Re: [Python-ideas] Dart like multi line strings identation

On Sun, Apr 1, 2018 at 7:11 PM, Eric V. Smith wrote: > Interestingly, in 2.7 'ur' is a valid prefix, but not in 3.6. I don't recall > if that was deliberate or not. And 'ru' isn't valid in either version. I believe it was. The 'ur' string literal in Py2 was a bizarre hybrid

Re: [Python-ideas] Dart like multi line strings identation

On 3/31/2018 9:48 PM, Steven D'Aprano wrote: On Sun, Apr 01, 2018 at 02:20:16AM +0100, Rob Cliffe via Python-ideas wrote: New unordered 'd' and 'D' prefixes, for 'dedent', applied to multiline strings only, would multiply the number of alternatives by about 5 and would require another rewrite

Re: [Python-ideas] Dart like multi line strings identation

On Sun, Apr 01, 2018 at 07:39:31AM +, Marius Räsener wrote: > Ok I see this is nothing for any 3.x release. [...] > So, if at all, maybe something for Python 4 :) No, that's the wrong conclusion to draw. There are four options: (1) Change the behaviour of triple-quoted strings, immediately

Re: [Python-ideas] Dart like multi line strings identation

Ok I see this is nothing for any 3.x release. I imagine this now either ‚clean‘ for users with compatibility break or just leave things as they are. So, if at all, maybe something for Python 4 :) Coincidence I watched yesterday Armin Ronachers talk related to seeing compatibility as the holy cow

Re: [Python-ideas] Dart like multi line strings identation

On Sun, Apr 01, 2018 at 02:20:16AM +0100, Rob Cliffe via Python-ideas wrote: > >New unordered 'd' and 'D' prefixes, for 'dedent', applied to multiline > >strings only, would multiply the number of alternatives by about 5 and > >would require another rewrite of all code (Python or not) that

Re: [Python-ideas] Dart like multi line strings identation

In 3.6, we introduced a new prefix, 'f', so there was no back compatibility issue.  There was, however, a combinatorial explosion issue, as 'F' was also added (a mistake, I now think), and no order requirement (possibly another mistake).  Hence stringprefix    ::=  "r" | "u" | "R" | "U"

Re: [Python-ideas] Dart like multi line strings identation

On Sat, Mar 31, 2018 at 04:50:03PM +0200, Marius Räsener wrote: [...] > What I have in mind is probably best described with an Example: > > print(""" > I am a > multiline > String. > """) > > the closing quote defines the "margin indentation" - so in this example all > lines

Re: [Python-ideas] Dart like multi line strings identation

On 3/31/2018 2:14 PM, Marius Räsener wrote: Oh, ok... yeah didn‘t think of that. Except I guess I‘d assume that so far multiline strings are either with textwrap or ‚don‘t care‘? Maybe? For docstrings, I don't care, as a docstring consumer like help() can reformat the docstring with indents

Re: [Python-ideas] Dart like multi line strings identation

On 3/31/2018 10:50 AM, Marius Räsener wrote: What I have in mind is probably best described with an Example: print("""     I am a     multiline     String.     """) the closing quote defines the "margin indentation" - so in this example all lines would get reduces by their leading 4

Re: [Python-ideas] Dart like multi line strings identation

Oh, ok... yeah didn‘t think of that. Except I guess I‘d assume that so far multiline strings are either with textwrap or ‚don‘t care‘? Maybe? But sure, with that in mind it gets more tricky Todd schrieb am Sa. 31. März 2018 um 19:49: > It would radically change the meaning

Re: [Python-ideas] Dart like multi line strings identation

It would radically change the meaning of every existing multi-line string. That is an enormous backwards-compatibility break. It might work as a __future__ import, though. On Sat, Mar 31, 2018, 13:03 Marius Räsener wrote: > Hey David, > > hm, that's actually a nice way to

Re: [Python-ideas] Dart like multi line strings identation

Hey David, hm, that's actually a nice way to solve this too I guess, besides the additional import and "string literal". but as I answered to robert before (did it wrong with who to answer, correct it just now so the mailing-list has the answer, too) was, that I don't have a string literal in

Re: [Python-ideas] Dart like multi line strings identation

Hey Robert Not really, I don‘t think another string literal would be nice. Also, to correct your example, it would have to look something like: print(d“““ I am a Line “““) The Idea is to use the closing quotes to detect the indentation length so to speak... 2018-03-31 17:48

Re: [Python-ideas] Dart like multi line strings identation

I can currently write: from textwrap import dedent as d print(d(""" I am A Line """)) It doesn't feel like these hypothetical d-strings are with new syntax. On Sat, Mar 31, 2018, 11:49 AM Robert Vanden Eynde wrote: > So yes, currently you just do : > > import

Re: [Python-ideas] Dart like multi line strings identation

I have to admit, regardless of how practical this is, it would surely get rid of a ton of textwrap.dedent calls all over the place... On March 31, 2018 9:50:43 AM Marius Räsener wrote: Hey List, this is my very first approach to suggest a Python improvement I'd think

[Python-ideas] Dart like multi line strings identation

Hey List, this is my very first approach to suggest a Python improvement I'd think worth discussing. At some point, maybe with Dart 2.0 or a little earlier, Dart is now supporting multiline strings with "proper" identation (tried, but I can't find the according docs at the moment. probably due