Vigenere多表替换密码

def solve(____):
    result = []
    key_idx = ____
    for c in text:
        if c.isalpha():
            shift = ord(key[key_idx % len(____)].lower()) - ord(____)
            base = ord(____) if c.isupper() else ord(____)
            result.append(chr((ord(____) - base + shift) % ____ + base))
            key_idx += ____
        else:
            result.append(____)
    print('____'.join(____))