List comprehension for dict in dict

Question

I have the following python dictionary (a dict in a dict):

d = {'k1': {'kk1':'v1','kk2':'v2','kk3':'v3'},'k2':{'kk1':'v4'}}

I can't get my brains to figure out the list comprehension to get a list of all values (v1, v2...). If you can give my an example with a lambda also, that you be nice.

The goal is to have values_lst = ['v1','v2','v3','v4']

Thanks

It helps to write it as a regular loop first and then change it to a list comprehension. What have you tried? — Pranav Hosangadi, Sep 14 '20 at 22:07

Jan Christoph Terasa · Accepted Answer · 2020-09-14T22:11:46.990

0

Combine two loops to "flatten" the dict of dicts. Loop over the values of d first, and then loop over the values of the values of d. The syntax might be a bit hard to grasp at first:

values_lst = [v for x in d.values() for v in x.values()]

edited Sep 14 '20 at 22:11

answered Sep 14 '20 at 22:06

Jan Christoph Terasa

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List comprehension for dict in dict

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