You see, Antoine, *you* know that it's better asked on python-ideas because you know it doesn't exist in Python, therefore it's an idea for an addition. However, when a person like me asks this question, he does not know whether it exists or not, so he can't know whether he's proposing a new idea or whether it's something that exists under a different name or whether that's something that can't exist because of some unknown reason that the asker didn't think of.