Concatenate strings in 2 different lists [duplicate]

Answer 1

How about two for loops?

pseudocode below

for item in list1:
    for item2 in list2:
         item = item + item2

Answer 2

You could use itertools.product to get the Cartesian product or employ 2 loops

>>> list1 = ['A','B','C']
>>> list2 = ['D', 'E']
>>> import itertools
>>> list(itertools.product(list1, list2))
[('A', 'D'), ('A', 'E'), ('B', 'D'), ('B', 'E'), ('C', 'D'), ('C', 'E')]
>>> [(i, j) for i in list1 for j in list2]
[('A', 'D'), ('A', 'E'), ('B', 'D'), ('B', 'E'), ('C', 'D'), ('C', 'E')]

Answer 3

This should help:

import itertools

list1 = ['A','B','C']
list2 = ['D', 'E']
list(map("".join, itertools.product(list1, list2)))
# ['AD', 'AE', 'BD', 'BE', 'CD', 'CE']

Also, can be solved with a list comprehension.

["".join(i) for i in itertools.product(list1, list2)]