distinction between float & int

[Ishwor]

hi all,
can anyone tell me why this distinction? i mean why it returns False
on floats??[color=blue][color=green][color=darkred]
>>> a = 1
>>> b = 1
>>> a is b[/color][/color][/color]
True[color=blue][color=green][color=darkred]
>>> a = 1.1
>>> b = 1.1
>>> a is b[/color][/color][/color]
False[color=blue][color=green][color=darkred]
>>>[/color][/color][/color]

thanx .
--
cheers,
Ishwor Gurung

[Steve Holden]

Re: distinction between float & int

Ishwor wrote:
[color=blue]
> hi all,
> can anyone tell me why this distinction? i mean why it returns False
> on floats??
>[color=green][color=darkred]
>>>>a = 1
>>>>b = 1
>>>>a is b[/color][/color]
>
> True
>[color=green][color=darkred]
>>>>a = 1.1
>>>>b = 1.1
>>>>a is b[/color][/color]
>
> False
>
>
> thanx .[/color]

There is no guarantee that this will hold in all implementations of Python.

The majority implementation, usually called CPython because its
implementation language is C, keeps copies of the first 100 (?) integers
so it doesn't have to create separate integer objects each time they are
required.

No caching at all is applied to floats, as far as I can tell.
[color=blue][color=green][color=darkred]
>>> a = 250
>>> b = 250
>>> a is b[/color][/color][/color]
False

regards
Steve

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