On Tue, Sep 4, 2012 at 11:30 PM, Franck Ditter <fra...@ditter.org> wrote: > Hi ! > a is b <==> id(a) == id(b) in builtin classes. > Is that true ? > Thanks, > > franck
No. It is true that if a is b then id(a) == id(b) but the reverse is not necessarily true. id is only guaranteed to be unique among objects alive at the same time. If objects are discarded, their ids may be reused even though the objects are not the same. -- http://mail.python.org/mailman/listinfo/python-list
