Hi there, Probably many of you have seen/written/used a lot of recipes for flattening lists/tuples, several of them are similar diverging just a bit, some uses more obscure code than others, some are not fast enough, but I have noticed all those have one thing in common: none of them mention _tkinter._flatten, not even in comments (if the site allows that). Apparently _tkinter._flatten is unknown, and it being marked private doesn't help, and it also lives under _tkinter but doesn't depend on anything from tcl/tk. This _flatten has the advantage of being faster then the alternatives I have seen coded in Python, since it is done in C and its code is simple and it doesn't try to be too smart. It is also already part of Python, it is just unknown to most apparently. So, I would like to know what do you think about moving _tkinter._flatten to some other module and renaming it to "flatten" ? -- -- Guilherme H. Polo Goncalves