Python：列表中每个可能的子集组合

Question

i have a list:

list = ["M","M","M","C","C","C"]

i want the output to be

out = [["M"],["C"],["M,"C"],["M","M"],["C","C"]]

how to do this? Thanks in advance!

I have used this code:

from itertools import chain, combinations
stuff = ["M","M","M","C","C","C"]
def all_subsets(ss):
    p = map(lambda x: combinations(ss, x), range(1, 3))
    return p

for subset in all_subsets(stuff):
    print(list(subset))

for subset in all_subsets(stuff):
    print(list(subset))

but the output is

Answer 1

If you only want combinations with 1 and 2 elements then maybe try itertools.combinations :

>>> from itertools import combinations
>>> l = ["M", "M", "M", "C", "C", "C"]
>>> combs = set(list(combinations(l, 1)) + list(combinations(l, 2)))
>>> out = list(map(list, combs))
>>> print(out)
[['C', 'C'], ['M', 'M'], ['C'], ['M', 'C'], ['M']]