python 3.x - Retrieve the key from multi dimension list if the value exists in first colum

Question

I am trying to retrieve the key of the value 1 if 1 exists in first column of a list. For example:

{1: [3, 2, 3, 2],
2: [1, 2, 3, 4], 
3: [3, 4, 2, 1],}

We have 1 in located key 2 first column. How can I retrieve it? my brain froze in this step.

question from:https://stackoverflow.com/questions/66050715/retrieve-the-key-from-multi-dimension-list-if-the-value-exists-in-first-colum

Answer 1

try this

print([k for k in d if d[k][0] == 1  ])