String Identity Test

[Thomas Moore]

Hi:

I am confused at string identity test:

Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on
win32
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>>> a="test"
>>> b="test"
>>> a is b
True
>>>

About identity, I think a is not b, but "a is b" returns True.
Does that mean equality and identity is the same thing for strings?