[PEAK] events.sources.Not

[Bob Ippolito]

On Feb 24, 2004, at 8:24 PM, Phillip J. Eby wrote:

> At 06:27 PM 2/23/04 -0800, John Landahl wrote:
>> peak/events/sources.py should probably have Not in its __all__ list, 
>> otherwise one can't use 'events.Not'.  A "from peak.events.sources 
>> import Not" works, but this is probably not the intended usage.
>
> Nope.  Use '~aCondition' to obtain its opposite.  'Not' is not a 
> public class, and I probably should've named it '_Not' to make that 
> clear.
>
> Note that '~~x is x', but 'Not(Not(x)) is not x'.  That's why you 
> shouldn't be using 'Not'.

That sure is isn't not confusing to not not read :)

-bob