how to find common keys from two dict with difference in values

Question

I am trying to get the keys whose values differ in both dictionaries eg:

items1=['a','b','c']
price1=[1,2,3]
dictA= dict(zip(items1, price1))

items2=['a','b']
price2=[1,3]
dictB=dict(zip(items2,price2))

so the difference will be ['b'] as this key is the only difference

i tried using set(dictA.items()).symmetric_difference(dictB.items()) , but this is also returning the key:value {'c':3}

Answer 1

Iterate over the common keys, and drop keys having matching values in dictA and dictB :

In [3]: {key for key in dictA.keys() & dictB if dictA[key] != dictB[key]}
Out[3]: {'b'}

Answer 2

您必须在交叉路口上进行迭代。

delta = [k for k in (set(dictA) & set(dictB)) if (dictB[k] - dictA[k])]