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| References | (3 earlier) <matlbh$r0s$1@ger.gmane.org> <CAPTjJmp=b2ZA8eqvyf3tqK+0MHqOgS-PAG+ELNNOwuKKPq4FJQ@mail.gmail.com> <mailman.18488.1423127457.18130.python-list@python.org> <54d33aa6$0$13003$c3e8da3$5496439d@news.astraweb.com> <CALwzidnG7gPEe3d3AUMA8B7XZNE48SzeNK+DSdwYKuiGiU7PUg@mail.gmail.com> |
|---|---|
| From | Devin Jeanpierre <jeanpierreda@gmail.com> |
| Date | 2015-02-05 17:12 -0800 |
| Subject | Re: meaning of: line, = |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.18498.1423185179.18130.python-list@python.org> (permalink) |
On Thu, Feb 5, 2015 at 8:08 AM, Ian Kelly <ian.g.kelly@gmail.com> wrote: > On Thu, Feb 5, 2015 at 2:40 AM, Steven D'Aprano > <steve+comp.lang.python@pearwood.info> wrote: >> Devin Jeanpierre wrote: >>> On Wed, Feb 4, 2015 at 1:18 PM, Chris Angelico <rosuav@gmail.com> wrote: >>>>>>>> [result] = f() >>>>>>>> result >>>>> 42 >>>> >>>> Huh, was not aware of that alternate syntax. >>> >>> Nor are most people. Nor is Python, in some places -- it seems like >>> people forgot about it when writing some bits of the grammar. >> >> Got an example where you can use a,b but not [a,b] or (a,b)? > >>>> def f(a, (b, c)): > ... print a, b, c > ... >>>> f(3, [4, 5]) > 3 4 5 >>>> def g(a, [b, c]): > File "<stdin>", line 1 > def g(a, [b, c]): > ^ > SyntaxError: invalid syntax > > Although to be fair, the first syntax there is no longer valid either > in Python 3. As Ian rightly understood, I was referring to differences between "[a, b, ...]" and "(a, b, ...)". Here's another example, one that still exists in Python 3: >>> [] = '' >>> () = '' File "<stdin>", line 1 SyntaxError: can't assign to () The syntax explicitly blacklists (), but forgets to blacklist []. -- Devin
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Re: meaning of: line, = Albert-Jan Roskam <fomcl@yahoo.com> - 2015-02-04 14:38 +0000
Re: meaning of: line, = Rustom Mody <rustompmody@gmail.com> - 2015-02-04 07:09 -0800
Re: meaning of: line, = Peter Otten <__peter__@web.de> - 2015-02-04 18:36 +0100
Re: meaning of: line, = Chris Angelico <rosuav@gmail.com> - 2015-02-05 08:18 +1100
Re: meaning of: line, = Devin Jeanpierre <jeanpierreda@gmail.com> - 2015-02-05 01:10 -0800
Re: meaning of: line, = Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-02-05 20:40 +1100
Re: meaning of: line, = Ian Kelly <ian.g.kelly@gmail.com> - 2015-02-05 09:08 -0700
Re: meaning of: line, = Rustom Mody <rustompmody@gmail.com> - 2015-02-05 08:45 -0800
Re: meaning of: line, = Skip Montanaro <skip.montanaro@gmail.com> - 2015-02-05 10:56 -0600
Re: meaning of: line, = Tim Chase <python.list@tim.thechases.com> - 2015-02-05 11:00 -0600
Re: meaning of: line, = Rustom Mody <rustompmody@gmail.com> - 2015-02-05 08:59 -0800
Re: meaning of: line, = Devin Jeanpierre <jeanpierreda@gmail.com> - 2015-02-06 05:09 -0800
Re: meaning of: line, = Rustom Mody <rustompmody@gmail.com> - 2015-02-06 05:20 -0800
Re: meaning of: line, = Rustom Mody <rustompmody@gmail.com> - 2015-02-06 06:03 -0800
Re: meaning of: line, = Tim Chase <python.list@tim.thechases.com> - 2015-02-05 10:21 -0600
Re: meaning of: line, = Devin Jeanpierre <jeanpierreda@gmail.com> - 2015-02-05 17:12 -0800
Re: meaning of: line, = Chris Angelico <rosuav@gmail.com> - 2015-02-06 12:17 +1100
Re: meaning of: line, = Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-02-06 17:52 +1300
Re: meaning of: line, = Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-02-06 12:30 +1300
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