> I'm unclear on the meaning of the last line in detail #3, "(Loop > variables may also use constructs like x[i] or x.a; this form may be > deprecated.)" > > Does this mean that "(x.a for x in mylist)" will initiatly be valid but > will someday break? No, I meant that "for x.a in mylist: ..." is valid but shouldn't be, and consequently (because they all share the same syntax) this is also allowed in list comprehensions and generator expressions. All uses should be disallowed. > If so, I can't imagine why. Or does in mean that > the induction variable can be in that form, "(x for x.a in mylist)". > Surely, this would never be allowed. We can prevent it for generator expressions, but it's too late for list comprehensions and regular for loops -- we'll have to go deprecate it there. --Guido van Rossum (home page: http://www.python.org/~guido/)
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