Terry J. Reedy <tjreedy@udel.edu> added the comment: The __sizeof__ special attribute shows up in dir(object) but appears not to be documented other than with
help(object.__sizeof__) Help on method_descriptor: __sizeof__(...) __sizeof__() -> size of object in memory, in bytes
Should it have an entry in Lib 4.12. Special Attributes? object.__sizeof__ A method used by sys.getsizeof. It should then show up in the index (missing now) and point people to sys.getsizeof. Looking further, I see that it is mentioned but not indexed in the sys.getsizeof entry. ---------- nosy: +terry.reedy _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue10994> _______________________________________