On Mon, Oct 22, 2012 at 1:03 AM, Chris Angelico <ros...@gmail.com> wrote: > Python's system "just works" most of > the time, but can introduce yet another trap for the unsuspecting > newbie who doesn't understand the difference between rebinding and > mutating; I've not looked into multiple levels of closures but I > suspect there'll be odd limitations there, as there's only one > "nonlocal" keyword.
On my wishlist for Python is a big, fat SyntaxError for any variable that could be interpreted as either local or nonlocal and is not explicitly declared as either. It would eliminate this sort of confusion entirely and make code that shadows nonlocal variables much more readable. Ideally, the same thing would also be done for locals that shadow globals, but I don't see how that could possibly be enforced at compile time. -- http://mail.python.org/mailman/listinfo/python-list
