alf <[EMAIL PROTECTED]> writes:
> I have a reference to certain objects. What is the most pythonic way
> to test for valid reference:
If you're intending to use None as a sentinel for an invalid reference,
then use
> if obj is not None:
You could also make a unique sentinel:
Sentinel = object()
...
if obj is not Sentinel: ...
"if obj" isn't necessarily what you want; obj might be a valid but
empty container.
"if obj != None" is also wrong, for reasons someone else explained.
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