Does '!=' equivelent to 'is not'
Erik Max Francis
max at alcyone.com
Tue Jun 17 05:41:49 CEST 2008
> I'm a bit confusing about whether "is not" equivelent to "!="
> if a != b:
> if a is not b:
> What's the difference between "is not" and "!=" or they are the same thing?
The `==` operator tests equality. The `is` operator tests identity.
If you don't specifically intend to test for identity, use `==`. If you
don't know what identity tests are for (with the exception of testing
for None-ness), then you don't need it.
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