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From: Chris Angelico <rosuav@gmail.com>
Newsgroups: comp.lang.python
Subject: Re: Parens do create a tuple
Date: Mon, 11 Apr 2016 11:51:34 +1000
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On Mon, Apr 11, 2016 at 11:41 AM, Ben Finney <ben+python@benfinney.id.au> w=
rote:
>> I'd rather be correct on the one-element case and wrong on the empty
>> than the other way around.
>
> To say =E2=80=9Ccommas create tuples=E2=80=9D is to say an unobjectionabl=
y true
> statement about Python syntax. It remains true as one continues to learn
> Python.
>
> To say =E2=80=9Cparens do not create tuples=E2=80=9D is to lay a trap whi=
ch needs to be
> de-fused at some point. Better IMO never to lay that trap.

Fair. "Commas create tuples" is correct but incomplete; "parens do not
create tuples" is incorrect in a narrow way. Fortunately, technical
correctness lines up with the more useful case of helping people
understand the one-element case.

ChrisA