Ethan Furman added the comment: '.0' does not have a name unless the user defines it; similarly, '.-1' does not have a name unless the user defines it.
For Flags, negative numbers are supported in order to specify which flags are desired, but the final representation will be zero or positive: >>> class Hah(enum.Flags): ... this, that, these, those, thuse ... >>> Hah(0) <Hah: 0> >>> Hah(-1) <Hah.this|that|these|those|thuse: 31> The algorithm is simple: start with the biggest Flag and mask off matching bits until all bits are are matched. If any unmatched bits remain an error is raised. If a user does horrible things like your Weird class then any breakage is on them. As it stands, Weird(7) would be <Weird.A|BC: 7>, and if A was not defined an error would be raised. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23591> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
