size of variable in python [duplicate]

Question

I would like to know how much memory is being occupied by a variable.

Let us assume this example:

import numpy as np

t = [np.random.rand(10000) for _ in range(1000)]

How much memory in megabytes is t occupying?

I ran:

sys.getsizeof(array_list)

and I am getting 8856 which seems low for the amount of information contained in t

Best Regards.

This is a lot harder to pin down in languages like Python than, say, C. Are you counting the overhead of the array? — tadman
– tadman, Commented May 17, 2023 at 15:03
@tadman should be the size of everything. I am using sys.getsizeof(t) but it is giving me 8856 bytes... which seems too low — nop nop
– nop nop, Commented May 17, 2023 at 15:06
That could be the size of the array, excluding the size of the values. In other words, also count the getsizeof(e) for each element e. — tadman
– tadman, Commented May 17, 2023 at 15:07
Yeah, getsizeof is telling you the size of the list, not its contained objects. — tdelaney
– tdelaney, Commented May 17, 2023 at 15:07
I would like the size of everything. How much memory am I alocating to store that array — nop nop
– nop nop, Commented May 17, 2023 at 15:07

Talha Tayyab · Accepted Answer · 2023-05-17 15:10:31Z

3

from pympler import asizeof
asizeof.asizeof([np.random.rand(10000) for _ in range(1000)])

#output
80120872

pip install Pympler

answered May 17, 2023 at 15:10

Talha Tayyab

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1 Comment

I have tried this one. It works the best for list of multidimensional arrays. [Although it is an external library]