## Python中两个列表的排列？内容来源于 Stack Overflow，并遵循CC BY-SA 3.0许可协议进行翻译与使用

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```list1 = ['square','circle','triangle']
list2 = ['red','green']```

```[
'squarered', 'squaregreen',
'redsquare', 'greensquare',
'circlered', 'circlegreen',
'redcircle', 'greencircle',
'trianglered', 'trianglegreen',
'redtriangle', 'greentriangle'
]```

### 2 个回答

```>>> import itertools
>>> map(''.join, itertools.chain(itertools.product(list1, list2), itertools.product(list2, list1)))
['squarered', 'squaregreen', 'circlered',
'circlegreen', 'trianglered', 'trianglegreen',
'redsquare', 'redcircle', 'redtriangle', 'greensquare',
'greencircle', 'greentriangle']```

`itertools.product`

```>>> import itertools
>>> a = ['foo', 'bar', 'baz']
>>> b = ['x', 'y', 'z', 'w']

>>> for r in itertools.product(a, b): print r[0] + r[1]
foox
fooy
fooz
foow
barx
bary
barz
barw
bazx
bazy
bazz
bazw```

```>>> for r in itertools.chain(itertools.product(a, b), itertools.product(b, a)):
...   print r[0] + r[1]```