[Python-Dev] Re: stdlib Flag Enums and the "no value" member

On 2021-04-29 18:19, Ethan Furman wrote:

An excerpt from bpo-31369: re.RegexFlag and `__all__`

GvR: ----

...

One thing I discovered when developing this example: there doesn't seem to be a flag to represent 0 (zero), i.e. "no flags". And foo(0) is a type error (even though it works fine at runtime).

Which raises the question: Do we want to have a standard name for stdlib Flags when no flags are set?

What should we call it?

- NONE

- ZERO

- EMPTY

- ???

Definitely NONE. At some point I might even add it to the regex module! :-)