[Python-Dev] Enum conversions in the stdlib

[Ethan Furman]

There are a few modules that have had their constants redefined as Enums, such as signal, which has revealed a minor nit:

 >>> pp(list(signal.Signals))
[<Signals.SIGUSR2: 12>,
  <Signals.SIGINT: 2>,
  <Signals.SIGTTIN: 21>,
  <Signals.SIGFPE: 8>,
  <Signals.SIGRTMAX: 64>,
  <Signals.SIGABRT: 6>,
  <Signals.SIGCONT: 18>,
  <Signals.SIGBUS: 7>,
  <Signals.SIGHUP: 1>,
  <Signals.SIGTSTP: 20>,
  <Signals.SIGSEGV: 11>,
  <Signals.SIGWINCH: 28>,
  <Signals.SIGIO: 29>,
  <Signals.SIGQUIT: 3>,
  <Signals.SIGTRAP: 5>,
  <Signals.SIGRTMIN: 34>,
  <Signals.SIGPIPE: 13>,
  <Signals.SIGVTALRM: 26>,
  <Signals.SIGURG: 23>,
  <Signals.SIGPROF: 27>,
  <Signals.SIGCHLD: 17>,
  <Signals.SIGXCPU: 24>,
  <Signals.SIGILL: 4>,
  <Signals.SIGSYS: 31>,
  <Signals.SIGSTOP: 19>,
  <Signals.SIGALRM: 14>,
  <Signals.SIGPWR: 30>,
  <Signals.SIGTERM: 15>,
  <Signals.SIGTTOU: 22>,
  <Signals.SIGXFSZ: 25>,
  <Signals.SIGUSR1: 10>,
  <Signals.SIGKILL: 9>]

The resulting enumeration is neither in alpha nor value order.  While this has no bearing on programmatic usage I would 
like these Enums to be ordered, preferably by value.

Would anyone prefer lexicographical ordering, and if so, why?

--
~Ethan~