[Python-ideas] Make partial a built-in

[Michel Desmoulin]

(Sorry, answered to one person again. Reposting)

I like the bind() idea because it doesn't clutter the builtin namespace.
It solves the import problem and feels very natural IMO.

The only issue is the name. In my mind, bind() convey the idea you are
modifying the function it self, while partial() convey the idea you
return new function.

It could also be written in C for performances.


Le 20/09/2016 à 10:22, אלעזר a écrit :
> Yeah I did say it was a strawman :)
> 
> On Tue, Sep 20, 2016 at 11:17 AM Chris Angelico <rosuav at gmail.com
> <mailto:rosuav at gmail.com>> wrote:
> 
>     On Tue, Sep 20, 2016 at 6:09 PM, אלעזר <elazarg at gmail.com
>     <mailto:elazarg at gmail.com>> wrote:
>     > I meant something like making it a "__bind__" (just a strawman
>     suggestion)
>     > and do the same lookup as foo() does, and using a (wrong)
>     > functional-programming-inspired syntax
>     >
>     >     foo 5 ()
>     >
>     > Such a syntax will have the side benefit of allowing calling print
>     in a
>     > similar way to Python2, which people seem to love.
>     >
>     >     print "hello" ()
>     >
> 
>     Python has a rule that syntax shouldn't look like grit on Tim's
>     screen. In this case, it looks like the *absence of* grit, which is
>     even worse :) You're giving meaning to the abuttal of two tokens, the
>     first of which must be callable but the second can be anything. And it
>     creates the scary situation of giving valid-but-useless meaning to
>     something all too common in Py2 code:
> 
>     print "hello"
> 
>     This would now create a function that, if called, would print "hello",
>     but then abandons it without a second thought. So it'd work in 2.7,
>     fail with an opaque error in 3.3, fail with a more informative error
>     in 3.5, and silently do nothing in 3.7. No thank you! :)
> 
>     ChrisA
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