Frequency of elements in a list of list

Question

My goal is to count frequency of words in a list of list. So, I have:

list_1 = [['x', 'y', 'z'], ['x', 'y', 'w'], ['w', 'x', 'y']]

My goal is something like:

x:3, y:3, w:2, z:1

Please update your question with the code you have tried. – quamrana Jul 12 '21 at 17:47 — quamrana, Jul 12 '21 at 17:47

score 3 · Accepted Answer · answered Jul 12 '21 at 17:48

3

You can use Counter:

>>> from collections import Counter
>>> Counter(elem for sub in list_1 for elem in sub)
Counter({'x': 3, 'y': 3, 'w': 2, 'z': 1})

answered Jul 12 '21 at 17:48

Francisco

10,918
6
34
45

score 1 · Answer 2 · answered Jul 12 '21 at 17:49

1

You can do it like this:

list_1 = [['x', 'y', 'z'], ['x', 'y', 'w'], ['w', 'x', 'y']]

freq = {}

for i in list_1:
    for j in i:
        try:
            freq[j] += 1
        except KeyError:
            freq[j] = 1
        
print(freq)

answered Jul 12 '21 at 17:49

Marko Borković

1,884
1
7
22

Thanks really much for your time and attention, Marko, I really appreciate it!! – Victor Castro Jul 12 '21 at 18:59

Frequency of elements in a list of list

2 Answers2