dimitrios apostolou geefogmxnet hi dug source code looking complexity set operations wiki page documented interesting finding different st sdifferencet also interesting first sets second every iterable portable characteristics python language implementation specific details addition someone explain usefulness loop starting pydict_checkexactother set_difference understand set_difference always called two sets arguments set_sub actual call im trying figure complexity set operations things get complicated id appreciate help thanks dimitris _______________________________________________ pythondev mailing list zvlllneumpythonorg httpmailpythonorgmailmanlistinfopythondev unsubscribe httpmailpythonorgmailmanoptionspythondevpythondev40tangomucom wed 06 aug 2008 104941 0200 pythondev complexity documentation request