>>> dictA={"a":1,"b":2,"c":3}
>>> dictB={"b":1,"c":2,"d":3}
>>> dict_temp={}
>>> for i in dictA:
dict_temp[i]=1
>>> for i in dictB:
dict_temp[i]=1
>>> duplicate_word_count=len(dictA)+len(dictB)-len(dict_temp)
>>> duplicate_word_count
2
>>>
len(set(dicA).difference(dicB))+len(set(dicB).difference(dicA))
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