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 - interesting watch... https://www.youtube.com/watch?v=xkcNoqHgNs8&feature=youtu.be&t=2890 Steven D'Aprano <st...@pearwood.info> schrieb am So. 1. Apr. 2018 um 03:49: > 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 parses > > >Python code (such as in syntax colorizers). > > > > I think you're exaggerating the difficulty somewhat. Multiplying the > > number of alternatives by 5 is not the same thing as increasing the > > complexity of code to parse it by 5. > > Terry didn't say that it would increase the complexity of the code by a > factor of five. He said it would multiply the number of alternatives by > "about 5". There would be a significant increase in the complexity of > the code too, but I wouldn't want to guess how much. > > Starting with r and f prefixes, in both upper and lower case, we have: > > 4 single letter prefixes > (plus 2 more, u and U, that don't combine with others) > 8 double letter prefixes > > making 14 in total. Adding one more prefix, d|D, increases it to: > > 6 single letter prefixes > (plus 2 more, u and U) > 24 double letter prefixes > 48 triple letter prefixes > > making 80 prefixes in total. Terry actually underestimated the explosion > in prefixes: it is closer to six times more than five (but who is > counting? apart from me *wink*) > > [Aside: if we add a fourth, the total becomes 634 prefixes.] > > > > -- > Steve > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ >
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