On Mon, Feb 25, 2013 at 3:17 PM, Glyph <gl...@twistedmatrix.com> wrote:
> > On Feb 25, 2013, at 12:32 PM, Barry Warsaw <ba...@python.org> wrote: > > Dumb question, but are flufl.enums ordered? That's also an important use > case. > > > Kind of. Ordered comparisons are explicitly not supported, but iteration > over > the Enum is guaranteed to be returned in int-value order. > > > Sorry to jump in to a random leaf of this thread, but there is such a > barrage here I cannot find the beginning :). > > I can see in <http://www.python.org/dev/peps/pep-0435/#acknowledgments> > that Twisted is mentioned; it should probably reference < > https://twistedmatrix.com/documents/current/api/twisted.python.constants.html> > and <https://twistedmatrix.com/documents/current/core/howto/constants.html> > since we actually implemented a thing as well. > > (You can order constants by sorting them; off the top of my head, > NamedConstant, ValueConstant, and FlagConstant all probably behave > differently.) > > Glyph, thanks for the input. I mentioned Twisted because in its code I found a number of places with simple string enumerations used to represent state. I was not aware of twisted.python.constants, but it doesn't appear that this module is used at least in the places I checked. Examples: * twisted/web/_newclient.py * twisted/web/http.py * twisted/protocol/sip.py In general, many protocols have some "state" instance var that's usually just a string, using either predefined constants or direct string literals. Eli
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