I want to merge two arrays in python with all possible combinations
ex a= [1, 2, 3] and b= [4, 5, 6] should give the output
c= [(1,4),(1,5),(1,6)
(2,4),(2,5),(2,6)
(3,4),(3,5),(3,6)]
in this particular order(i.e. of order 3x3). The order is particularly important here
The itertools.product function does exactly this.
>>> import itertools
>>> a, b = [1,2,3], [4,5,6]
>>> list(itertools.product(a, b))
[(1, 4), (1, 5), (1, 6), (2, 4), (2, 5), (2, 6), (3, 4), (3, 5), (3, 6)]
Note: it might very well be the case that you don't need list(), this is just to show the output here.
You're looking for itertools.product
from itertools import product
a = [1,2,3]
b = [4,5,6]
print(list(product(a, b)))
Outputs
[(1, 4), (1, 5), (1, 6), (2, 4), (2, 5), (2, 6), (3, 4), (3, 5), (3, 6)]
This will return a list with all permutations of list a and b.
import itertools
map(''.join, itertools.chain(itertools.product(a, b), itertools.product(b, a))
