Similarly, on macOS 10.12.3 Sierra: % python3.5 Python 3.5.3 (v3.5.3:1880cb95a742, Jan 16 2017, 08:49:46) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> s = set(range(10)) >>> sys.getsizeof(s) 736 >>> sys.getsizeof(set(s)) 736 >>> sys.getsizeof(set(set(s))) 736 >>>
% python3 Python 3.6.0 (v3.6.0:41df79263a11, Dec 22 2016, 17:23:13) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> s = set(range(10)) >>> sys.getsizeof(s) 736 >>> sys.getsizeof(set(s)) 1248 >>> sys.getsizeof(set(set(s))) 1248 >>> % python2 Python 2.7.13 (v2.7.13:a06454b1afa1, Dec 17 2016, 12:39:47) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> s = set(range(10)) >>> sys.getsizeof(s) 744 >>> sys.getsizeof(set(s)) 744 >>> sys.getsizeof(set(set(s))) 744 >>> -- https://mail.python.org/mailman/listinfo/python-list
