Memory footpring of python objects

Steven D'Aprano steven at
Wed Apr 22 11:56:25 CEST 2009

On Wed, 22 Apr 2009 02:30:32 -0700, Chris Rebert wrote:

> On Wed, Apr 22, 2009 at 2:24 AM, BlueBird <phil at> wrote:
>> Hi,
>> I have a program that manages several thousands instances of one
>> object. To reduce memory
>> consumption, I want of course that specific object to have the smallest
>> memory footpring possible.
>> I have a few ideas that I want to experiment with, like using
>> __slots__, using a tuple or using a dict. My question is: how do I know
>> the memory footprint of a given python object ? I could not find any
>> builtin functions for this in the documentation.
> sys.getsizeof() -

Only in Python 2.6.

But if you search Activestate, there's a recipe to do the same thing. Ah, 
here it is:


More information about the Python-list mailing list