python combinations

from itertools import combinations

school_subjects = ["math", "science", "history", "geography", "language arts", "Spanish"]

num_per_combos = 3

combos = list(combinations(school_subjects, num_per_combos))

for lists in combos:
    for combo in lists:
        print(combo + " ")
    print("\n")

all_combinations = [list(zip(each_permutation, list2)) for each_permutation in itertools.permutations(list1, len(list2))]

import itertools
def subs(l):
    res = []
    for i in range(1, len(l) + 1):
        for combo in itertools.combinations(l, i):
            res.append(list(combo))
    return res