从字典中删除重复性的Python程序

给定一个值作为列表的字典，任务是编写一个Python程序，该程序可以删除字典的内容，而不管它们是多次出现的键或值。

Input : {‘gfg’ : [‘gfg’, ‘is’, ‘best’], ‘best’ : [‘gfg’], ‘apple’ : [‘good’]}

Output : {‘gfg’: [‘gfg’, ‘is’, ‘best’], ‘apple’: [‘good’]}

Explanation : best key is omitted as it is already as value of 1st key. 

Input : {‘gfg’ : [‘gfg’, ‘is’, ‘best’, ‘apple’], ‘best’ : [‘gfg’], ‘apple’ : [‘good’]}

Output : {‘gfg’: [‘gfg’, ‘is’, ‘best’, ‘apple’]}

Explanation : best and apple keys are omitted as it is already as value of 1st key. 

方法：使用循环和items()

在这种情况下，我们迭代每个键，并使用 items() 提取其值，并记住它们，如果键和值已经发生，则省略添加/创建。

程序：

Python3

# initializing dictionary
test_dict = {'gfg': ['gfg', 'is', 'best'],
             'best': ['gfg'],
             'apple': ['good']}
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
res = dict()
for key, val in test_dict.items():
  
    flag = True
    for key1, val1 in res.items():
  
        # filtering value from memoised values
        if key in val1:
            flag = False
    if flag:
        res[key] = val
  
# printing result
print("The filtered dictionary : " + str(res))

输出：

The original dictionary is : {‘gfg’: [‘gfg’, ‘is’, ‘best’], ‘best’: [‘gfg’], ‘apple’: [‘good’]}

The filtered dictionary : {‘gfg’: [‘gfg’, ‘is’, ‘best’], ‘apple’: [‘good’]}