On Sat, 01 May 2010 19:03:04 -0700, Chris Rebert wrote: > On Sat, May 1, 2010 at 6:32 PM, Steven D'Aprano > <st...@remove-this-cybersource.com.au> wrote: >> On Sat, 01 May 2010 07:13:42 -0500, Tim Chase wrote: >>> This doesn't preclude you from implementing a self-mutating += style >>> __add__ method and returning "self", but it's usually a bad idea >> >> Obviously the Python dev team don't agree with that :) >> >> Just to prove that += for lists is not an accident: [...] > In both cases, __iOP__ operator methods are being used, not vanilla > __OP__ methods, so neither of your examples are relevant to Mr. Chase's > point.
I'm sorry, I read Tim's reference to __add__ (instead of __iadd__) as a typo. Having __add__ mutate self would be a strange thing to do. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
