buds.py

#!/usr/bin/env python3

from random import shuffle
from sys import argv
from typing import Iterator, List, Tuple

DEFAULT_REVIEWER = 'JP'


def pairs(names: List[str], default: str) -> Iterator[Tuple[str, str]]:
    if len(names) % 2 != 0:
        names.append(default)

    shuffle(names)
    eligible = set(names)

    return ((eligible.pop(), eligible.pop()) for _ in range(len(eligible) // 2))


if __name__ == '__main__':
    if len(argv) < 2:
        print('Usage: ./buds.py [NAME] [NAME] ...')

    names = argv[1:]
    width = len(max(names, key=len))

    for name1, name2 in pairs(names, DEFAULT_REVIEWER):
        print(f'{name1:<{width}}   {name2:<{width}}')