On Fri, Mar 4, 2016 at 10:08 PM, <jf...@ms4.hinet.net> wrote: > Below is the troubled codes in file lex.py: > Note: In original codes (before 2To3 modify), there is "types.ObjectType" > instead of "object". > --------- > # Available instance types. This is used when lexers are defined by a class. > # It's a little funky because I want to preserve backwards compatibility > # with Python 2.0 where types.ObjectType is undefined. > try: > _INSTANCETYPE = (types.InstanceType, object) > except AttributeError: > _INSTANCETYPE = types.InstanceType > class object: pass # Note: needed if no new-style classes present > ----------- > The author had put some comments above these codes but I have no idea what he > is talking about.
I'm not sure exactly what this is trying to do, but if it's just for isinstance testing, you can save yourself a lot of trouble. In Python 3, *every* type inherits from 'object'. So _INSTANCETYPE can be set to just object - and anything that's trying to query that can simply assume it's true. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
