How to get all keys where its values are same and data type of values are always list in python?-CodePudding

mydict = {
    'name' : ['cat','dog'],
    'place' : ['earth','mars'],
    'name1' : ['cat','dog'],
    'name2' : ['cat','dog'],
    'place1' : ['earth','mars'],
    'colour' : ['blue','green'],
    'colour1' : ['orange']
}

expected_result

[['name','name1','name2'],['place','place1']]

Since 'colour' and 'colour1' are not same we will ignore them.

CodePudding user response：

Probably not the fastest solution, but you can find the duplicate values first, then list the corresponding keys:

>>> values = list(mydict.values())
>>> duplicates = set(tuple(v) for v in values if values.count(v) > 1)
>>> [[k for k, v in mydict.items() if tuple(v) == d] for d in duplicates]
[['name', 'name1', 'name2'], ['place', 'place1']]

CodePudding user response：

from collections import defaultdict
rev = defaultdict(list)
for i in mydict:
    rev[tuple(mydict[i])].append(i)

answer = [i for i in rev.values() if len(i)>=2]
#[['name', 'name1', 'name2'], ['place', 'place1']]