shallowcopy of an object

[deanhystad]

Don't use the reply button. It is annoying having to scroll down a bunch of duplicated posts.

Here is a solution that uses itertools combinations. It is a generator, so it only makes the subsets one at a time

import itertools

def powerset(values):
    """Generate subsets of values."""
    for length in range(len(values)+1):
        for subset in itertools.combinations(values, length):
            yield subset

for subset in powerset((1, 2, 3)):
    print(subset)

Output:
()
(1,)
(2,)
(3,)
(1, 2)
(1, 3)
(2, 3)
(1, 2, 3)