conv.py

#!/usr/bin/env python3

import sys

def convert(kind: str, rank: str) -> int:
    kind_table = {
        '♦': 0,
        '♥': 1,
        '♠': 2,
        '♣': 3
    }

    if rank == 'A':
        rank = 14
    elif rank == 'K':
        rank = 13
    elif rank == 'D':
        rank = 12
    elif rank == 'B':
        rank = 11
    else:
        rank = int(rank)

    return kind_table[kind] + (rank - 7) * 4

def parse_card(s: str) -> (str, int):
    return s[:1], s[1:]

cards = sys.argv[1]
cards = cards.replace(' ', '').split(',')

converted = []

for card in cards:
    kind, rank = parse_card(card)
    converted.append(convert(kind, rank))

print('{', end='')
print(*converted, sep=', ', end='')
print('}')