[Python-ideas] Add __nonzero__ to threading.Event

[Terry Reedy]

Floris Bruynooghe wrote:
> Hi
> 
> I was wondering why threading.Event hasn't got the __nonzero__ special
> attribute?  I think it would allow for code to be more pythonic if you
> could just do "if e: ..." instead of "if e.isSet(): ..."
> (or "if e.is_set(): ..." in 2.6+).

2.6 and 3.1 are feature frozen.

I think the proposal should be to add __bool__ to 3.2 and maybe backport 
to 2.7 as __nonzero__.  It is possible that 3.2 will get new features 
not added to 2.7, but I doubt the opposite.

> The patch is trivial:
> 
> Index: Lib/threading.py
> ===================================================================
> --- Lib/threading.py    (revision 72551)
> +++ Lib/threading.py    (working copy)
> @@ -371,6 +371,9 @@
> 
>      is_set = isSet
> 
> +    def __nonzero__(self):
> +        return self.__flag
> +
>      def set(self):
>          self.__cond.acquire()
>          try:
> 
> 
> Is it worth submitting this to the tracker or is there some reason why
> this is a bad idea that I've missed?

Since you have a patch that people could grab and apply, and not just an 
idea, I say submit too.

tjr