Danny Yoo added the comment: Alternatively, change the representation of flag values from integers to some class extension that supports the common bitwise operators.
As a very rough sketch: >>> class FlagInt(int): ... def __or__(self, other): ... return FlagInt(int(self) | int(other)) ... >>> f1 = FlagInt(1) >>> f2 = FlagInt(2) >>> f1 | f2 3 >>> isinstance(3, FlagInt) False >>> isinstance(f1 | f2, FlagInt) True That way, flag arguments can be determined at runtime to have derived from the proper flag values. This kind of approach may have some backwards-incompatibility, unfortunately, since other folks have been hardcoding integers rather than use the flag constants. Other concerns might include serialization, in case someone tries to save a FlagInt somewhere and pull it out at some other time. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28905> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
