大量の入れ子forループを作る

Question

次のような感じでforループが何重もネストする構造を作るとき、効率の良い方法はないのでしょうか？

for i in ["a","b","c","d","e"]:
    for j in ["a","b","c","d","e"]:
        for k in ["a","b","c","d","e"]:
            for l in ["a","b","c","d","e"]:
                for m in ["a","b","c","d","e"]:
                   print(i,j,k,l,m)
                    

出力
aaaaa
aaaab
aaaac
aaaad
aaaae
aaaba
aaabb
・
・
・

Answer 1

モジュールitertoolsのproductを検討してみてください。

from itertools import product
for t in product("abcde", repeat=5):
    print(t)

Answer 2

itertools.productが使えます。

from itertools import product

for elem in product(["a", "b", "c", "d", "e"], repeat=3):
    print(*elem)

実行結果 Wandbox

a a a
a a b
a a c

...中略...

e e c
e e d
e e e