完善扑克牌游戏代码，通过蒙特卡罗模拟计算以下概率： prob_two_pairs()： 五张牌中正好两对； prob_same_suit()：五张牌中有四张或五张同一花色的牌； prob_fourofakind()： 五张牌中有四张牌面数字相同的牌（四条，花色可能不同）。

以下是完整的扑克牌游戏代码，包括蒙特卡罗模拟计算以上三个概率的函数实现：

import random

class Card:
    def __init__(self, suit, rank):
        self.suit = suit
        self.rank = rank

    def __str__(self):
        return f"{self.rank}{self.suit}"

class Deck:
    def __init__(self):
        self.cards = []
        for suit in ["H", "D", "C", "S"]:
            for rank in range(2, 11):
                self.cards.append(Card(suit, str(rank)))
            for rank in ["J", "Q", "K", "A"]:
                self.cards.append(Card(suit, rank))

    def shuffle(self):
        random.shuffle(self.cards)

    def deal(self):
        return self.cards.pop()

    def __str__(self):
        deck_comp = ""
        for card in self.cards:
            deck_comp += " " + card.__str__()
        return "The deck has" + deck_comp

class Hand:
    def __init__(self):
        self.cards = []

    def add_card(self, card):
        self.cards.append(card)

    def get_value(self):
        value = 0
        num_aces = 0
        for card in self.cards:
            if card.rank in ["J", "Q", "K"]:
                value += 10
            elif card.rank == "A":
                num_aces += 1
                value += 11
            else:
                value += int(card.rank)
        while value > 21 and num_aces:
            value -= 10
            num_aces -= 1
        return value

    def __str__(self):
        hand_comp = ""
        for card in self.cards:
            hand_comp += " " + card.__str__()
        return "The hand has" + hand_comp

def prob_two_pairs(num_trials=100000):
    num_success = 0
    for i in range(num_trials):
        deck = Deck()
        deck.shuffle()
        hand = Hand()
        for j in range(5):
            hand.add_card(deck.deal())
        rank_counts = {}
        for card in hand.cards:
            if card.rank in rank_counts:
                rank_counts[card.rank] += 1
            else:
                rank_counts[card.rank] = 1
        num_pairs = 0
        for rank in rank_counts:
            if rank_counts[rank] == 2:
                num_pairs += 1
        if num_pairs == 2:
            num_success += 1
    return num_success / num_trials

def prob_same_suit(num_trials=100000):
    num_success = 0
    for i in range(num_trials):
        deck = Deck()
        deck.shuffle()
        hand = Hand()
        for j in range(5):
            hand.add_card(deck.deal())
        suit_counts = {}
        for card in hand.cards:
            if card.suit in suit_counts:
                suit_counts[card.suit] += 1
            else:
                suit_counts[card.suit] = 1
        if 4 in suit_counts.values() or 5 in suit_counts.values():
            num_success += 1
    return num_success / num_trials

def prob_fourofakind(num_trials=100000):
    num_success = 0
    for i in range(num_trials):
        deck = Deck()
        deck.shuffle()
        hand = Hand()
        for j in range(5):
            hand.add_card(deck.deal())
        rank_counts = {}
        for card in hand.cards:
            if card.rank in rank_counts:
                rank_counts[card.rank] += 1
            else:
                rank_counts[card.rank] = 1
        if 4 in rank_counts.values():
            num_success += 1
    return num_success / num_trials

上面的代码实现了一个基本的扑克牌游戏，包括一副牌的生成、洗牌、发牌、手牌的计算等功能。在此基础上，实现了三个函数，分别计算了五张牌中正好两对、五张牌中有四张或五张同一花色的牌、五张牌中有四张牌面数字相同的牌（四条，花色可能不同）的概率。

这些函数使用蒙特卡罗模拟的方法计算概率，即生成大量的随机手牌，统计其中符合条件的手牌数量，除以总手牌数量得到概率。函数的参数是模拟的手牌数量，可以根据需要进行调整。