1

このループの問題を複数のリストで解決する方法について、あなたのアイデアをお待ちしています。次のような長さの異なる複数のリストがあります ['dog','cat'], [5,45,8,9], ['yellow','blue','black']。

次のように、これらのリストの要素にアクセスできるようにしたいと考えています。

1. ['dog', 5, 'yellow']
2. ['dog', 5, 'blue']
3. ['dog', 5, 'black']
4. ['dog', 45, 'yellow']
5. ['dog', 45, 'blue']
6. ['dog', 45, 'black']
7. ['dog', 8, 'yellow']
8. ['dog', 8, 'blue']
9. ['dog', 8, 'black']
10. ['dog', 9, 'yellow']
11. ['dog', 9, 'blue']
12. ['dog', 9, 'black']
13. ['cat', 5, 'yellow']
14. ['cat', 5, 'blue']
15. ['cat', 5, 'black']
16. ['cat', 45, 'yellow']
17. ['cat', 45, 'blue']
18. ['cat', 45, 'black']
19. ['cat', 8, 'yellow']
20. ['cat', 8, 'blue']
21. ['cat', 8, 'black']
22. ['cat', 9, 'yellow']
23. ['cat', 9, 'blue']
24. ['cat', 9, 'black']

ありがとう。フォーマットが不器用で少し読みにくいので、再投稿する必要があります

4

2 に答える 2

7

あなたが探しているitertools.product：

>>> from itertools import product
>>> animal = ['dog','cat']
>>> number = [5,45,8,9]
>>> color = ['yellow','blue','black']
for i,p in enumerate(product(animal, number, color),1):
    print "{}. {}".format(i,str(list(p)))
...     
1. ['dog', 5, 'yellow']
2. ['dog', 5, 'blue']
3. ['dog', 5, 'black']
4. ['dog', 45, 'yellow']
5. ['dog', 45, 'blue']
6. ['dog', 45, 'black']
7. ['dog', 8, 'yellow']
8. ['dog', 8, 'blue']
9. ['dog', 8, 'black']
10. ['dog', 9, 'yellow']
11. ['dog', 9, 'blue']
12. ['dog', 9, 'black']
13. ['cat', 5, 'yellow']
14. ['cat', 5, 'blue']
15. ['cat', 5, 'black']
16. ['cat', 45, 'yellow']
17. ['cat', 45, 'blue']
18. ['cat', 45, 'black']
19. ['cat', 8, 'yellow']
20. ['cat', 8, 'blue']
21. ['cat', 8, 'black']
22. ['cat', 9, 'yellow']
23. ['cat', 9, 'blue']
24. ['cat', 9, 'black']
于 2013-07-08T19:30:56.597 に答える
2

さまざまなリストをループして組み合わせたリストを作成する、もう少し「歩行者」な方法:

animal = ['dog','cat']
number = [5,45,8,9]
color = ['yellow','blue','black']
num = 0
combined = []

for a in animal:
  for n in number:
    for c in color:
      print a, n, c
      combined.append([a, n, c])

print combined

この正確なコードをファイルanimal.pyに保存し、コマンド ラインから実行するとpython animal.py、次の出力が得られます。

dog 5 yellow
dog 5 blue
dog 5 black
dog 45 yellow
dog 45 blue
dog 45 black
dog 8 yellow
dog 8 blue
dog 8 black
dog 9 yellow
dog 9 blue
dog 9 black
cat 5 yellow
cat 5 blue
cat 5 black
cat 45 yellow
cat 45 blue
cat 45 black
cat 8 yellow
cat 8 blue
cat 8 black
cat 9 yellow
cat 9 blue
cat 9 black
[['dog', 5, 'yellow'], ['dog', 5, 'blue'], ['dog', 5, 'black'], ['dog', 45, 'yellow'], ['dog', 45, 'blue'], ['dog', 45, 'black'], ['dog', 8, 'yellow'], ['dog', 8, 'blue'], ['dog', 8, 'black'], ['dog', 9, 'yellow'], ['dog', 9, 'blue'], ['dog', 9, 'black'], ['cat', 5, 'yellow'], ['cat', 5, 'blue'], ['cat', 5, 'black'], ['cat', 45, 'yellow'], ['cat', 45, 'blue'], ['cat', 45, 'black'], ['cat', 8, 'yellow'], ['cat', 8, 'blue'], ['cat', 8, 'black'], ['cat', 9, 'yellow'], ['cat', 9, 'blue'], ['cat', 9, 'black']]

特定の要素が必要な場合は、今すぐ実行できます（たとえば）

print "element 3 is ", combined[3]

これは戻ります

element 3 is  ['dog', 45, 'yellow']
于 2013-07-08T19:34:07.007 に答える