如何在Dict中查找重复值并使用这些值打印键 [英] How to find Duplicate values in Dict and print keys with those values

问题描述

我想知道如何在字典中找到重复的值，并返回包含这些值的键.

I wanted to know how I can find duplicate values in a dictionary and the return the keys that contain those values.

所以这是一个例子:

d = {'happy':['sun', 'moon', 'chocolate'], 'sad':['fail', 'test', 'bills'], 'random': ['baloon', 'france', 'sun'] }

您会看到密钥的 happy 和 random 具有相同/重复的值，即'sun'，因此我一直在寻找的输出是:

As you can see the key's happy and random have the same/duplicate value in them, which is 'sun', so the output I was looking for is:

random, happy

我真的不明白如何找到类似的重复值.

I cant really understand how I can find duplicate values like that.

如果我有一个特殊的值，例如'Chocolate'，那么我可以简单地使用d.keys()进行for循环...

If I had a particular value such as 'Chocolate', then I could simply do a for loop using d.keys() ...

推荐答案

超级快捷又肮脏

d = {'happy':['sun', 'moon', 'chocolate'], 'sad':['fail', 'test', 'bills'], 'random': ['baloon', 'france', 'sun'] }
specific_word = 'bear' #uncomment to search for specific word

for key_a in d: #loop through the keys of d
   for key_b in d: #loop a second time through the keys of d
       if key_a == key_b: #if the keys are the same, skip it
           break
       for item in d[key_a]: #loop through items in d[key_a]
           if (item in d[key_b]): #check if the item is in d[key_b]
           #if you want to search ONLY for specific_word then this above if statement changes to this:
           #if (item in d[key_b]) and item == specific_word:
               print key_a,key_b #if u made it this far, print the keys
               break # stop printing other stuff, in case of multiple matches

以定义形式:(您应该经常尝试这样做)

in definition form: ( You should pretty much always try to do it like this)

def duplicate_dictionary_check(d,specific_word=''):
    for key_a in d:
       for key_b in d
           if key_a == key_b:
               break
           for item in d[key_a]:
               if (item in d[key_b]):
                   if specific_word:
                        if specific_word == item:
                            print key_a,key_b,"found specific word:", specific_word
                   print key_a,key_b,"found match:",item

然后您就可以像

 d = {'happy':['sun', 'moon', 'chocolate'], 'sad':['fail', 'test', 'bills'], 'random': ['baloon', 'france', 'sun'] }
 duplicate_dictionary_check(d)
 # or
 duplicate_dictionary_check(d,'sun')

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