On Tue, May 25, 2021 at 8:11 AM Chris Angelico <ros...@gmail.com> wrote:
> On Tue, May 25, 2021 at 5:29 PM Steven D'Aprano <st...@pearwood.info> > wrote: > > Here's a counter-proposal: we have a special symbol which is transformed > > at compile-time to the left hand assignment target as a string. Let's > > say we make that special expression `@@` or the googly-eyes symbol. > > ... > > Questions: > > 1) Is this restricted to the "=" assignment operator, or will other > operators trigger this too? > x += f(@@) # ? > if x := f(@@): # ? > > 2) What about other forms of assignment? > for spam in foo(@@): # ? > with open(@@ + ".json") as config: # ? > from sys import @@ as argv # okay that's just stupid > > 3) Is this a string literal, or a magic token that happens to evaluate > as a string? > x = @@ ".json" # Legal if @@ is a string literal > > No wrong answers. (Well, unless you say "tomato". That is a very wrong > answer to a yes/no question.) > > I'm liking this. It might mean that class syntax and decorator abuse > become less necessary as ways to get around name duplication. > > ChrisA > Another one to add to the list: does it work with lambdas on the RHS? Does it matter how nested? x = lambda: @@ y = lambda: lambda: lambda: @@ --- Ricky. "I've never met a Kentucky man who wasn't either thinking about going home or actually going home." - Happy Chandler
_______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/ZRQIVAPVVL63BZ6EJ76CATLWJP3V55MV/ Code of Conduct: http://python.org/psf/codeofconduct/
