Get the size of an object.

get_size.py

import sys
import types
import gc

ignored_types = (
    type,
    types.FunctionType,
    types.LambdaType,
    types.MethodType,
    types.BuiltinFunctionType,
    types.BuiltinMethodType,
    types.ModuleType,
)


def get_size(obj, seen=set()):
    if isinstance(obj, (int, float, complex, str, bytes, bytearray)):
        return sys.getsizeof(obj)
    elif isinstance(obj, ignored_types) or id(obj) in seen:
        return 0
    else:
        seen.add(id(obj))

    size = sys.getsizeof(obj)
    for child in gc.get_referents(obj):
        size += get_size(child, seen)
    return size