Steven D'Aprano <[EMAIL PROTECTED]> writes: > No. I'm obsessed with finding out what closures are, since nobody seems to > have a good definition of them!
Why don't you read SICP: http://mitpress.mit.edu/sicp/full-text/book/book.html You will be a much wiser person for having done so. > However, I have learnt some things: closures are something which > functions HAVE, not ARE. Nah, that describes the data layout through which CPython implements closures, not the bigger idea of what closures are. > The func_closure attribute is just part of the implementation of the > closure. Some languages have closures and some don't. And a closure > is something that lets a function object access the lexical scope > that existed when the function object was created, e.g. the > namespace of the function which created it. I'd say, the closure is the function's executable code, plus the lexical environment that got recorded at the time the function was created. -- http://mail.python.org/mailman/listinfo/python-list
