list comprehension problem
ben+python at benfinney.id.au
Fri Oct 30 05:03:31 CET 2009
(Please preserve attribution lines when you quote someone, so we can
keep track of who said what in the developing discussion.)
Nick Stinemates <nick at stinemates.org> writes:
> > Some objects are singletons, ie there's only ever one of them. The
> > most common singleton is None. In virtually every other case you
> > should be using "==" and "!=".
> Please correct me if I am wrong, but I believe you meant to say some
> objects are immutable, in which case you would be correct.
No, I believe the person to whom you are responding meant specifically
to talk about singletons; what they said is correct.
Objects can be equal but not identical. This is true whether or not
those objects are of an immutable type.
\ “Prediction is very difficult, especially of the future.” |
`\ —Niels Bohr |
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