[Python-3000] Thoughts on dictionary views

[Delaney, Timothy (Tim)]

Larry Hastings wrote:

> Delaney, Timothy (Tim) wrote:
>> A view is a lightweight object that implements an interface by
>> delegating to an underlying object. The underlying object cannot be
>> changed through the view, but could be changed directly, in which
>> case the view will reflect the new contents of the object.
>
> It certainly makes sense that views would *usually* be read-only, but
> is that really a *requirement*?

No, but I think it would be worthwhile (and definitely simplest) if the
standard concept of a view in python was read-only.

Then any non-read-only view becomes the exception, and needs to be
flagged as such.

Tim Delaney