Dictionary values from a list of keys

Question

I have a dictionary:

d = {'a': 1, 'b': 2, 'c': 3}

and a list:

l = ['a', 'c']

How do I obtain a list of the dictionary values from the list above? i.e. I want:

[1, 3]

I've tried:

d[l]

but get the following error: TypeError: unhashable type: 'list'.

@cs95 I googled "list of dictionary values from list of keys python" it was the first result — Nick is tired, Jul 02 '19 at 16:39

score 1 · Answer 1 · answered Jul 02 '19 at 16:32

1

values = [d[x] for x in l]

answered Jul 02 '19 at 16:32

Matias Cicero

score 1 · Answer 2 · answered Jul 02 '19 at 16:32

1

[d[key] for key in l]

Python itself doesn't do vectorized expressions like the one you tried.

answered Jul 02 '19 at 16:32

Prune

score 0 · Answer 3 · answered Jul 02 '19 at 16:33

0

you can use list comprheension:

d = {'a': 1, 'b': 2, 'c': 3}
l = ['a', 'c']
res = [d[key] for key in l]

answered Jul 02 '19 at 16:33

developer_hatch

3 Answers3