python - 检索 Python 字典值

Question

这个问题已经有答案了:

奥 git _a (15 个回答)

已关闭 9 年前。

我目前有一个带有相当大字典的程序。

cards = {1.1:"Ace of Spades",
     1.2:"Ace of Clubs", 
     1.3:"Ace of Diamonds", 
     1.4:"Ace of Hearts", 

     2.1:"Two of Spades", 
     2.2:"Two of Clubs", 
     2.3:"Two of Diamonds",
     2.4:"Two of Hearts",

     3.1:"Three of Spades",
     3.2:"Three of Clubs",
     3.3:"Three of Diamonds",
     3.4:"Three of Hearts",

     4.1:"Four of Spades",
     4.2:"Four of Clubs",
     4.3:"Four of Diamonds",
     4.4:"Four of Hearts",

     5.1:"Five of Spades",
     5.2:"Five of Clubs",
     5.3:"Five of Diamonds",
     5.4:"Five of Hearts",

     6.1:"Six of Spades",
     6.2:"Six of Clubs",
     6.3:"Six of Diamonds",
     6.4:"Six of Hearts",

     7.1:"Seven of Spades",
     7.2:"Seven of Clubs",
     7.3:"Seven of Diamonds",
     7.4:"Seven of Hearts",

     8.1:"Eight of Spades",
     8.2:"Eight of Clubs",
     8.3:"Eight of Diamonds",
     8.4:"Eight of Hearts",

     9.1:"Nine of Spades",
     9.2:"Nine of Clubs",
     9.3:"Nine of Diamonds",
     9.4:"Nine of Hearts",

     10.1:"Ten of Spades",
     10.2:"Ten of Clubs",
     10.3:"Ten of Diamonds",
     10.4:"Ten of Hearts",

     11.1:"Jack of Spades",
     11.2:"Jack of Clubs",
     11.3:"Jack of Diamonds",
     11.4:"Jack of Hearts",

     12.1:"Queen of Spades",
     12.2:"Queen of Clubs",
     12.3:"Queen of Diamonds",
     12.4:"Queen of Diamonds",

     13.1:"King of Spades",
     13.2:"King of Clubs",
     13.3:"King of Diamonds",
     13.4:"King of Hearts"}

我想要做的事情。例如打印出 11.2(梅花 jack )的相应值。然后我还想打印出梅花 jack (11.2) 的相应值。

我该怎么做？

编辑

另外我想补充一点，当然它不会每次都是相同的值。它将被改变。该程序生成一个 1 到 13 之间的随机数，然后生成另一个 1 到 4 之间的随机数，然后将这两个数字相加，这样它就是#.#，然后我想检索该 float 的相应值。

Answer 1

打印出随机选择的数字的相应值将很容易:

print cards[randomNumber]

当您想要进行反向查找并打印出与“Jack of Clubs”相对应的值或任何相应的卡名时，就会出现问题。对于传统的字典，这将需要很长时间，因为它将涉及搜索字典中的每个值。

为了避免这种情况，您可以创建两个字典。但是，使用 David Zwicker 链接到的 Two way/reverse map 问题中的建议之一会更有效。