Which python built-in object has the least size in memory?

Question

# On Python 3.9.2
>>> sys.getsizeof(None)
16
>>> sys.getsizeof(0)
24
>>> sys.getsizeof(True)
28

I just wanted to know if there is any object with its size less than the size of None object, i.e. less than 16 bytes.

Answer 1

As suggested by @quamrana, I tried to sort all the built-in objects based on their sizes and got into the following observation. The code snippet I used:

import builtins, sys, inspect

classes = [i for i in builtins.__dict__.values() if inspect.isclass(i)]
objects = []
for i in classes:
    try:
        objects.append((i, sys.getsizeof(i())))
    except:
        ...
objects.sort(key=lambda x: x[1])
for i in objects[:10]:
    print(i)

And the stdout for the above snippet is:

(<class 'object'>, 16)
(<class 'bool'>, 24)
(<class 'float'>, 24)
(<class 'int'>, 24)
(<class 'complex'>, 32)
(<class 'bytes'>, 33)
(<class 'tuple'>, 40)
(<class '_frozen_importlib.BuiltinImporter'>, 48)
(<class 'str'>, 49)
(<class 'bytearray'>, 56)

These are the 10 objects which has least size on Python 3.9.2 which runs on my machine. As per @martineau's comment, the size of each object varies across different python versions and machines.