This is a special feature called interning in python. As of Python 2.6,
values of -5 to 105 are never cleared from memory for performance reasons.
This is applicable to integers only.
"==" is a value comparator, whereas "is" is a reference compartor.
Check this interesting extension to your code:
>>> a=5.0
>>> b=5.0
>>> a==b
True
>>> a is b
False
Because I used "5.0" instead of "5", the "is" operator is giving a different
result ("False")
~ Ajit Deshpande
2011/3/19 Yaşar Arabacı <yasar11...@gmail.com>
> >>>a=5
> >>>b=5
> >>>a == b
> True
> >>>a is b
> True
>
> My question is, why "a is b" is true. What I expected it to be is that, a
> and b are different things with same value.
>
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