[FIXED] How to join strings systematically in pairs of two in Python

Issue

I want to make a program that takes strings from a file - file.txt

apple
banana
horse
love
purple

and then joins the first word with every single other one and so on. The result should look like this:

applebanana
applehorse
applelove
applepurple
bananaapple
bananahorse
bananalove
bananapurple
horseapple
etc.

I get that I should probably use the join function, but I don't know how exactly? (If that makes sense, I am super sorry)

I tried also using zip, but couldn't make it word, so I leave it up to the professionals! <3 (I also use python 3) If u need more info I will try to respond as fast as I can! Thank you all!

Solution

This is exactly what itertools.permutations() does.

Return successive r length permutations of elements in the iterable.

from itertools import permutations

with open(<your_file>) as f:
    lst = [line.strip() for line in f]

for i, j in permutations(lst, r=2):
    print(i + j)

output:

applebanana
applehorse
applelove
applepurple
bananaapple
bananahorse
...

Answered By - SorousH Bakhtiary