[Python-Dev] PEP 285: Adding a bool type

[Patrick K. O'Brien]

> The issue of dictionary keys has been raised, and is a bit perplexing, but
> not overly so, IMO. However, I'd like confirmation that this is indeed the
> intended behavior:
>
> >>> d = {}
> >>> d[0] = 'First'
> >>> d
> {0: 'First'}
> >>> d[False] = 'Second'
> >>> d
> {0: 'Second'}
> >>> d[0.0] = 'Third'
> >>> d
> {0: 'Third'}
> >>> d[()] = 'Fourth'
> >>> d
> {0: 'Third', (): 'Fourth'}
> >>> d[None] = 'Fifth'
> >>> d
> {0: 'Third', (): 'Fourth', None: 'Fifth'}
>
> Or are there any situations like this where you would want True
> and False to
> be a bit more like None and a bit less like ints? Meaning True and False
> could be dictionary keys separate from 0 and 1.

I see that you just addressed this and confirmed that True==1 and False==0
in all contexts. That's fine by me. I just wanted confirmation.

---
Patrick K. O'Brien
Orbtech