> surprising for me: Surprise is subjective, it's based on personal experience. Very few languages allow arbitrary complex expressions in the same place they allow variable introduction. The fact that "i" is not defined is irrelevant to this example. Most programmers who haven't memorized Python grammar by heart, but expect the language to behave similar to the languages in the same category would be surprised this code is valid (i.e. can be parsed), whether it results in error or not is of no consequence.
> There's no destructuring going on here I use the term "destructuring" in the same way Hyperspec uses it. It's not a Python term. I don't know what you call the same thing in Python. I'm not sure what you understand from it. On Sat, Jan 13, 2024 at 12:37 AM Greg Ewing via Python-list <python-list@python.org> wrote: > > On 13/01/24 12:11 am, Left Right wrote: > > x = [...] > > for x[i] in x: print(i) > > I suspect you've misremembered something, because this doesn't > do anything surprising for me: > > >>> x = [1, 2, 3] > >>> for x[i] in x: print(i) > ... > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > NameError: name 'i' is not defined > > There's no destructuring going on here, just assignment to a > sequence item. > > -- > Greg > -- > https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
