Short python 3 script for randomly generating giftees for a gift exchange between 2 or more people.

pairs.py

from random import shuffle
from sys import argv
from pathlib import Path
names = []

if len(argv) == 2:
    file_path = Path(argv[1])

    if not file_path.exists():
        print(f'File not found: {argv[1]:s}')
    else:
        with open(argv[1],'r') as f:
            names = [n.rstrip().upper() for n in f.readlines() if n.rstrip() != '']

        n = len(names)

        if n > 2:
            shuffle(names)

            for i in range(n):
                name1 = names[i]
                name2 = names[(i+1) % n]
                print (f'{name1:s}\'s secret giftee is {name2:s}')
        else:
            print('List must contain more than 1 name')
else:
    print(f'   usage: {argv[0]:s} <input.txt>');