CODEWITHSUNDEEP
python-3.xdictionary
Tadeo Rod
Tadeo Rod

Reputation: 594

How to get the key from a given value in a Python dictionary?

How to get the key from a given value in a Python dictionary?

For example, if I have: 

d = {
        'Italy' : ['IT', 'ITA'],
        'Austria' : ['AT'],
    }

search = 'ITA'

What code is needed if I want this to return Italy. Notice that values can be lists

So if I search for AT, it should return Austria.

IT or ITA should return Italy.

Thanks in advance

Upvotes: 0

Views: 118

Answers (1)

Anton vBR
Anton vBR

Reputation: 18924

Possible duplicate of Get key by value in dictionary but you could invert the dictionary with this code:

d_inv = {}

for k, v in d.items():
    for i in v:
        d_inv[i] = k

And then use:

d_inv[search]

Upvotes: 1

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