python 中两个数组（不同大小）之间可能的唯一组合？

Question

arr1=['One','Two','Five'],arr2=['Three','Four']

喜欢itertools.combinations(arr1,2)给我们
('OneTwo','TwoFive','OneFive')
我想知道有没有办法将它应用于两个不同的数组？我的意思是 arr1 和 arr2。

Output should be OneThree,OneFour,TwoThree,TwoFour,FiveThree,FiveFour

Answer 1

如果您只想要 OneThree,OneFour,TwoThree,TwoFour,FiveThree,FiveFour，那么双 for 循环就可以解决问题：

>>> for x in arr1:
        for y in arr2:
            print(x+y)


OneThree
OneFour
TwoThree
TwoFour
FiveThree
FiveFour

或者如果您想要列表中的结果：

>>> [x+y for x in arr1 for y in arr2]
['OneThree', 'OneFour', 'TwoThree', 'TwoFour', 'FiveThree', 'FiveFour']

Answer 2

您正在寻找.product()：

根据文档，它是这样做的：

product('ABCD', 'xy') --> Ax Ay Bx By Cx Cy Dx Dy
product(range(2), repeat=3) --> 000 001 010 011 100 101 110 111

示例代码：

>>> x = itertools.product(arr1, arr2)
>>> for i in x: print i
('One', 'Three')
('One', 'Four')
('Two', 'Three')
('Two', 'Four')
('Five', 'Three')
('Five', 'Four')

合并它们：

# This is the full code
import itertools

arr1 = ['One','Two','Five']
arr2 = ['Three','Four']

combined = ["".join(x) for x in itertools.product(arr1, arr2)]

Answer 3

["".join(v) for v in itertools.product(arr1, arr2)]
#results in 
['OneThree', 'OneFour', 'TwoThree', 'TwoFour', 'FiveThree', 'FiveFour']

python 中两个数组（不同大小）之间可能的唯一组合？

possible unique combinations between between two arrays(of different size) in python?

python

arrays

itertools

python-3.x

python-3.4