sys.getsizeof(int) return 400 bytes

Question

I intend to get the max size of int

In [1]: import sys
In [2]: sys.getsizeof(int)
Out[2]: 400

Does it mean that the maxint in python is 2**40

However, when I tried

In [5]: types = [int, float, complex, list, tuple, dict, set, True, False, None]
In [7]: [sys.getsizeof(type) for type in types]
Out[7]: [400, 400, 400, 400, 400, 400, 400, 28, 24, 16]

all the data types are 400 bytes.

What does it 400 bytes mean for integer?

Answer 1

In your code you're getting the size of the class not of an instance of the class.

Call int to get the size of an instance, like the following code

>>> sys.getsizeof(int())
24