How to return a boolean to check if elements in two dicts are the same in python dictionaries?

Question

I have two dictionaries:

dict1 = {
    'Argentina': ['Buenos Aires'],
    'Bangladesh': ['Dhaka'],
    'Brazil': ['São Paulo', 'Rio de Janeiro']

dict2 = {
    1392685764: 'Tokyo', 1356226629: 'Mumbai', 1156073548: 'Shanghai',
    1484247881: 'Mexico City', 1156237133: 'Guangzhou', 1818253931: 'Cairo',
    1156228865: 'Beijing', 1840034016: 'New York', 1643318494: 'Moscow',
    1764068610: 'Bangkok', 1050529279: 'Dhaka', 1032717330: 'Buenos Aires'}

I would like to check that the nested values in dict1 have any elements in common with values in dict2. I’ve been doing this source:

def f(d1, d2, id, country):
    return set(d1.values()) == set(d2.values())

So, when the function is called with arguments dict1, dict2, country=Argentina and id=1032717330 returns True.

But the result is always an TypeError. Any help will be appreciate.

Asked By: tucomax

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Source

Answer 1

It seems that dict1 has lists as values, so you need to "chain" them into a single list first. You cat try something like this:

from itertools import chain
set(chain(*dict1.values())) == set(dict2.values())

It’s unclear how you want to use id and country, so I’ve left this out of the function.

Answered By: ShlomiF

Answer 2

Both dictionaries and sets are unordered which is probably why you’re getting different results. Assuming Python, you could do something like this:

def has_same_values(d1, d2):
    values1 = []
    values2 = []
    for key in d1.keys():
        values1.extend(d1[key])
    for key in d2.keys():
        values2.extend(d2[key])
    return values1.sort() == values2.sort()

Answered By: trisha

Answer 3

You need to convert the first dictionary values makes flatern,

def f(d1, d2):
     '''d1 values should be list'''
     return set([i for sublist in d1.values() for i in sublist]) == set(d2.values())

Execution:

In [1]: f(dict1, dict2)
Out[1]: False

EDIT
On your reversed requirements, you have to do this. You need to check the d2.value is exists in d1.value

def f(d1, d2, id, country):
    return d2.get(id) in d1.get(country)


f(dict1, dict2, 1032717330, 'Argentina')
# True

Answered By: Rahul K P

How to return a boolean to check if elements in two dicts are the same in python dictionaries?

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