Hello all, Is it possible to include algorithm complexity information for the various built-in types (strings, sets, lists, dictionaries...)? This would ease the decision for choosing the correct type. The information could simply be added as a new column in the tables found on pages as the following: http://docs.python.org/lib/types-set.html http://docs.python.org/lib/typesseq.html It took me a while to find some information for my purposes, however I'm not sure whether it's outdated or incomplete. The best sources I found are python-list archive and a PEP: http://www.python.org/dev/peps/pep-3128/ http://mail.python.org/pipermail/python-list/2007-June/446877.html Nevertheless, algorithm complexity is not always the answer. I remember some years ago I preferred using "x in list" rather than "x in set" as member checking in a tight loop, because the list was rather small (10-20 elements) and the overhead for the set was far greater than the better algorithm complexity advantage. So if this information is available, it would be nice to document constant time factors too. :-) Thanks in advance, Dimitris