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

2021年4月29日 10:46:40 -0700

On 2021年04月29日 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! :-)
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