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| References | <mailman.3001.1370909708.3114.python-list@python.org> <dffd70ad-4e9a-45cd-914b-7f1388ded5a2@a9g2000pbq.googlegroups.com> <51b69332$0$29997$c3e8da3$5496439d@news.astraweb.com> <c4d6d80f-291e-43bc-b75e-ba8eb9bfee3a@li6g2000pbb.googlegroups.com> |
|---|---|
| Date | 2013-06-11 17:20 +1000 |
| Subject | Re: "Don't rebind built-in names*" - it confuses readers |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3097.1371040064.3114.python-list@python.org> (permalink) |
On Tue, Jun 11, 2013 at 1:30 PM, rusi <rustompmody@gmail.com> wrote:
> Or by example:
>
> def foo(x)...
> def bar(x,y)...
> there is no reason to confuse the two xes.
>
> Whereas
>
> x = ...
> def foo(x)...
> Now there is!
>
> The first should be encouraged, the second discouraged.
Again, there can be good reason for it, such as snapshotting globals:
qwer=123
def asdf(qwer=qwer):
print("qwer",qwer)
asdf()
qwer=234
asdf()
Done for performance (avoiding lookups), could also be done for
stability (as depicted here) though I've never seen it needed for
that.
ChrisA
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"Don't rebind built-in names*" - it confuses readers Terry Jan Reedy <tjreedy@udel.edu> - 2013-06-10 20:14 -0400
Re: "Don't rebind built-in names*" - it confuses readers rusi <rustompmody@gmail.com> - 2013-06-10 19:36 -0700
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-11 03:02 +0000
Re: "Don't rebind built-in names*" - it confuses readers rusi <rustompmody@gmail.com> - 2013-06-10 20:30 -0700
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-11 05:52 +0000
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-11 17:20 +1000
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-11 13:57 +1000
Re: "Don't rebind built-in names*" - it confuses readers Serhiy Storchaka <storchaka@gmail.com> - 2013-06-11 18:55 +0300
Re: "Don't rebind built-in names*" - it confuses readers Mark Janssen <dreamingforward@gmail.com> - 2013-06-12 17:04 -0700
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-13 01:01 +0000
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-13 10:08 +1000
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-13 01:08 +0000
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-13 11:30 +1000
Re: "Don't rebind built-in names*" - it confuses readers Skip Montanaro <skip@pobox.com> - 2013-06-12 19:18 -0500
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-13 10:33 +1000
Re: "Don't rebind built-in names*" - it confuses readers Ethan Furman <ethan@stoneleaf.us> - 2013-06-12 17:30 -0700
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-11 02:56 +0000
Re: "Don't rebind built-in names*" - it confuses readers Terry Jan Reedy <tjreedy@udel.edu> - 2013-06-11 02:06 -0400
Re: "Don't rebind built-in names*" - it confuses readers Rick Johnson <rantingrickjohnson@gmail.com> - 2013-06-11 08:22 -0700
Re: "Don't rebind built-in names*" - it confuses readers Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-06-11 16:59 +0000
Re: "Don't rebind built-in names*" - it confuses readers Chris Angelico <rosuav@gmail.com> - 2013-06-12 03:32 +1000
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