commit 086b2affcf6cd491a7ad3c29a9c074975950c65a
Author: karoel2 <karoel123@gmail.com>
Date:   Tue Jan 10 08:29:28 2023 +0100

    init

diff --git a/cards.py b/cards.py
new file mode 100644
index 0000000..7ab0021
--- /dev/null
+++ b/cards.py
@@ -0,0 +1,172 @@
+# import itertools
+import random
+
+
+def shoe(n_of_decks: int = 1) -> list:
+    """Create shuffled shoe of n decks of cards
+
+    Args:
+        n_of_decks (int, optional): number of decks. Defaults to 1.
+
+    Returns:
+        list: shoe- shuffled decks of cards
+    """
+    vals = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'jack', 'queen', 'king', 'ace']
+    suits = ['spades', 'clubs', 'hearts', 'diamonds']
+
+    deck = []
+    for _ in range(n_of_decks):
+        for _ in suits:
+            deck.extend(vals)
+        # deck.extend(itertools.product(vals, suits))
+
+    random.shuffle(deck)
+    return deck
+
+def cards_eval(hand: list) -> list:
+    """Evaluate hand value. Will return two values if there is an ace
+    in the hand and both values are below 21.
+
+    Args:
+        hand (list): list of cards
+
+    Returns:
+        list: returns a list of values of the hand
+    """
+    evaluation = [0, 0]
+    for value in hand:
+        if value in ['jack', 'queen', 'king']:
+            evaluation[0] += 10
+            evaluation[1] += 10
+        elif value == 'ace':
+            evaluation[0] += 1
+            evaluation[1] += 11
+        else:
+            evaluation[0] += int(value)
+            evaluation[1] += int(value)
+    if evaluation[0] == evaluation[1]:
+        return [evaluation[0]]
+    elif evaluation[1] > 21:
+        return [evaluation[0]]
+    else:
+        return evaluation # both values returned
+
+def dealer(hand: list, shoe: iter) -> int:
+    """Dealer hand resolution
+
+    Args:
+        hand (list): dealer hand
+        shoe (iter): iterator of shoe
+
+    Returns:
+        int: dealer hand value
+    """
+    evaluation = cards_eval(hand)
+    while max(evaluation) < 17: #solve soft 17
+        hand.append(next(shoe))
+        evaluation = cards_eval(hand)
+    return max(evaluation)
+
+def AI(hand: list, face_up: str) -> str:
+    #TODO: add fuzzy logic
+    """Fuzzy AI 
+    possible player decision:
+    'hit', 'double down', 'split', 'surrender', 'stand'
+    Args:
+        hand (list): player hand
+        face_up (str): dealer face up card
+
+    Returns:
+        list: player decision
+    """
+    ### temp
+    # if face_up == 'ace':
+    #     return 'surrender'
+    # else:
+    evaluation = cards_eval(hand)
+    if max(evaluation) < 18:
+        return 'hit'
+    else:
+        return 'stand'
+    ### temp
+
+def blackjack(shoe: iter, dealer_hand: list=[], player_hand: list =[]) -> str:
+    """Single blackjack round
+
+    Args:
+        shoe (iter): shoe iterator
+        dealer_hand (list, optional): dealer hand. Should be non empty only in SPLIT.
+        player_hand (list, optional): player hand. Should be non empty only in SPLIT.
+
+    Returns:
+        str: game result
+    """
+    if dealer_hand == [] and player_hand == []:
+        dealer_hand = [next(shoe), next(shoe)]
+        player_hand = [next(shoe), next(shoe)]
+    face_up = dealer_hand[0]
+    
+    decision = ''
+    while decision != 'stand' or decision != 'surrender':
+        decision = AI(player_hand, face_up)
+        if decision == 'hit':
+            player_hand.append(next(shoe))
+        elif decision == 'double down':
+            player_hand.append(next(shoe))
+        elif decision == 'split':
+            #test if works
+            #this will work reccursevly
+            player_hand = player_hand[0]
+            blackjack(shoe, dealer_hand, player_hand)#new wager start
+            #old wager continue
+        elif decision == 'surrender':
+            break
+        elif decision == 'stand':
+            break
+
+    #dealer turn
+    dealer_value = dealer(dealer_hand, shoe)
+    player_value = max(cards_eval(player_hand))
+    # print(dealer_value, player_value) #debug
+    
+    #round end
+    if dealer_value > 21:
+        return 'player win'
+    elif player_value > dealer_value:
+        return 'player win'
+    elif player_value == dealer_value:
+        return 'push' #keep money, no win no lose 0$
+    else:
+        return 'dealer win'
+    #TODO: add adidtional return with wager value like +10$ or -20$
+
+def game_loop() -> None:
+    stats = 0
+    shoe_iter = iter(shoe(10))
+    while True:
+    #round start
+        try:
+            result = blackjack(shoe_iter)
+        except StopIteration:
+            break
+        if result == 'player win':
+            stats += 1
+        elif result == 'dealer win':
+            stats -= 1
+        elif result == 'push':
+            stats += 0
+    return stats
+
+if __name__ == '__main__':
+    print(game_loop())
+    
+# if __name__ == '__main__':
+#     import time
+#     #don't use time.time() for counting code execution time!
+#     start = time.perf_counter()
+#     for i in range(1000):
+#         game_loop()
+
+#     end = time.perf_counter()
+#     result = end - start
+#     print(result)
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