Ivan Levkivskyi wrote:
"People sometimes want to refactor for-loops containing `yield` into a comprehension but that doesn't work (particularly because of the hidden function scope) - lets make it a SyntaxError"
Personally I'd be fine with removing the implicit function scope from comprehensions and allowing yield in them, since the semantics of that are clear. But I don't see a way to do anything equivalent with generator expressions. Since the current effect of yield in a generator expression is pretty useless, it seems best just to disallow it. That means a list comprehension won't be equivalent to list(generator_expression) in all cases, but I don't think there's any great need for it to be. -- Greg _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com