I would love to show how easy it is to write from math import pi as π, gamma as Γ
but I had to cheat by copying from the OP since I don't know how to type these (and even if you were to tell me how I'd forget tomorrow). So, I am still in favor of the rule "only ASCII in the stdlib". On Fri, Jun 2, 2017 at 3:48 PM, Ivan Levkivskyi <levkivs...@gmail.com> wrote: > On 2 June 2017 at 12:17, Giampaolo Rodola' <g.rod...@gmail.com> wrote: > >> On Thu, Jun 1, 2017 at 8:47 AM, Serhiy Storchaka <storch...@gmail.com> >> wrote: >> >>> What you are think about adding Unicode aliases for some mathematic >>> names in the math module? ;-) >>> >>> math.π = math.pi >>> math.τ = math.tau >>> math.Γ = math.gamma >>> math.ℯ = math.e >>> >>> Unfortunately we can't use ∞, ∑ and √ as identifiers. :-( >>> >>> [...] >> * duplicated aliases might make sense if they add readability; in this >> case they don't unless (maybe) you have a mathematical background. I can >> infer what "math.gamma" stands for but not being a mathematician math.Γ >> makes absolutely zero sense to me. >> >> > There is a significant number of scientific Python programmers (21% > according to PyCharm 2016), so it is not that rare to meet someone who > knows what is Gamma function. > And for many of them π is much more readable than np.pi. Also there is > another problem, confusion between Gamma function and Euler–Mascheroni > constant, the first one is Γ, > the second one is γ (perfectly opposite to PEP 8 capitalization rules :-), > while both of them are frequently denoted as just gamma (in particular > math.gamma follows the PEP8 rules, > but is counter-intuitive for most scientist). > > All that said, I agree that these problems are easily solved by a custom > import from. Still there is something in (or related to?) this proposal > I think is worth considering: Can we also allow identifiers like ∫ or √. > This will make many expressions more similar to usual TeX, > plus it will be useful for projects like SymPy. > > -- > Ivan > > > > _______________________________________________ > Python-ideas mailing list > Python-ideas@python.org > https://mail.python.org/mailman/listinfo/python-ideas > Code of Conduct: http://python.org/psf/codeofconduct/ > > -- --Guido van Rossum (python.org/~guido)
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