> In the pydev thread, Guido said "My feeling is that limiting it to strings is fine, but checking those strings for resembling identifiers is pointless and wasteful."

But in a later message, after additional discussion, he acknowledged there could be reasons to change and said, "we needn't rush this."

So if the docs do describe the current implementation, I think it should warn people that this behavior might not be subject to the same backwards compatibility guarantees as other documented behavior.