Very complete explanation. Thank you Francis Girard
Le jeudi 27 Janvier 2005 22:15, Steven Bethard a écrit : > Francis Girard wrote: > > I see. There is some rule stating that all the strings are greater than > > ints and smaller than lists, etc. > > Yes, that rule being to compare objects of different types by their type > names (falling back to the address of the type object if the type names > are the same, I believe). Of course, this is arbitrary, and Python does > not guarantee you this ordering -- it would not raise backwards > compatibility concerns to, say, change the ordering in Python 2.5. > > > What was the goal behind this rule ? > > I believe at the time, people thought that comparison should be defined > for all Python objects. Guido has since said that he wishes the > decision hadn't been made this way, and has suggested that in Python > 3.0, objects of unequal types will not have a default comparison. > > Probably this means ripping the end off of default_3way_compare and > raising an exception. As Fredrik Lundh pointed out, they could, if they > wanted to, also rip out the code that special-cases None too. > > Steve -- http://mail.python.org/mailman/listinfo/python-list
