Question

我创建了一个字典，其中包含一组二十一点卡片中的不同卡片，我正在尝试编码。然而，在输出随机卡之后，我想将其从字典中删除，以便例如玩家在一轮中不接收两个Jack of Hearts。但是，我不想永久删除它，因为我希望它在新一轮回来时回来。这大致是我想要编写的代码（请注意我的代码中的字典包含所有卡片。）

#Create keys and values for cards
import random
dictCards = {'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}

#Distribute cards
print(random.choice(list(dictCards.keys())))
del dictCards(random.choice(list(dictCards.keys())))
print(random.choice(list(dictCards.keys())))

任何帮助都将非常感激，如果可能的话，它可能是相对简单的术语，因为我是python的新手。请随时询问您是否要我清除任何内容。

Answer 1

将它们放入列表并删除，尤其是在您每次拨打list(dictCards.keys())时创建列表时：

import random
dictCards = {'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}

cards = list(dictCards)
print(cards)
choice = random.choice(cards)
cards.remove(choice)
print(choice)
print(cards)

['4 of Hearts', '3 of Hearts', '2 of Hearts']
4 of Hearts
['3 of Hearts', '2 of Hearts']

如果你选择多张牌，你可能需要尝试/除以外：

for _ in range(5):
    try:
        choice = random.choice(cards)
        cards.remove(choice)
        print(choice)
    except IndexError:
        print("Sorry no more cards")
        break
print(cards)

In [14]: paste
dictCards = {'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}
cards = list(dictCards)
for _ in range(5):
    try:
        choice = random.choice(cards)
        cards.remove(choice)
        print(choice)
    except IndexError:
        print("Sorry no more cards")
        break
print(cards)

## -- End pasted text --
4 of Hearts
3 of Hearts
2 of Hearts
Sorry no more cards
[]

Answer 2

您需要创建字典的副本（使用dictCards.copy（））来保存当前回合中未使用的卡片，并从该副本中删除使用过的卡片。

Answer 3

您需要将删除的卡片添加到其他字典removed，以便稍后再使用这些卡片。

演示：

>>> import random
>>> dictCards = {'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}
>>> removed = {}
>>> while dictCards:
...    key = random.choice(list(dictCards.keys()))
...    print(key)
...    removed[key]=dictCards[key]
...    del dictCards[key]
... 
4 of Hearts
2 of Hearts
3 of Hearts
>>> dictCards
{}
>>> removed
{'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}

您现在可以将removed分配回dictCards。

Answer 4

我建议使用set s。 dict将在整个游戏中保持不变，作为卡值的查找表。变量stack持有一轮牌。

import random
dictCards = {'2 of Hearts': 2, '3 of Hearts': 3, '4 of Hearts': 4}

# at the beginning of the round you create the card stack
stack = set(dictCards.keys()) 
# then you choose a single card (hence the 1) from the stack
chosenCard = random.sample(stack, 1)[0]
# this card has to be removed from the stack
stack.remove(chosenCard) # stack.discard(chosenCard) is also possible
print("stack:", stack)
print("chosen card:", chosenCard, "with value", dictCards[chosenCard])

输出

stack: {'3 of Hearts', '4 of Hearts'}
chosen card: 2 of Hearts with value 2

如何在随机输出后暂时删除Python上的字典条目？

4 个答案: