On Sat, Oct 15, 2016 at 8:36 PM Chris Angelico <ros...@gmail.com> wrote:
> On Sun, Oct 16, 2016 at 4:33 AM, אלעזר <elaz...@gmail.com> wrote: > > You are confusing here two distinct roles of the parenthesis: > disambiguation > > as in "(1 + 2) * 2", and tuple construction as in (1, 2, 3). This > overload > > is the reason that (1) is not a 1-tuple and we must write (1,). > > Parentheses do not a tuple make. Commas do. > > 1, 2, 3, # three-element tuple > 1, 2, # two-element tuple > 1, # one-element tuple > > And what [1, 2, 3] means? It's very different from [(1,2,3)]. Python explicitly allow 1, 2, 3 to mean tuple in certain contexts, I agree. Elazar
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