How do you count elements of a list that's inside a dictionary?

Question

I'm learning python and in need of some tips working with dictionaries. Please see code below. I've tried using if word in filename.values() and if filename[word] to check if the word exists inside the dictionary but it's not working. I want to check and if possible count the total number of times word appears inside of those lists inside the dictionary. Please advise!

files = {"f1": ["cat", "dog", "mouse"],
         "f2": ["rat", "elephant", "tiger"]}

word = "dog"

for filename in files:
    if word in filename.values():
        print(True)
    else:
        print(False)

Does this answer your question? [Counting the Number of keywords in a dictionary in python](https://stackoverflow.com/questions/2212433/counting-the-number-of-keywords-in-a-dictionary-in-python) — Software2, Dec 29 '20 at 08:49
`for filename in files` will iterate over the dictionary's keys. You need `files.items()` for `key,value` pairs — yatu, Dec 29 '20 at 08:50
`for key, value in files.items(): if word in value: print(True) else: print(False)` — dudulu, Dec 29 '20 at 08:51
`any(word in i for i in files.values())` to check if is in any of the lists. — Klaus D., Dec 29 '20 at 08:52

score 0 · Accepted Answer · answered Dec 29 '20 at 08:52

0

It is what you expected?

files = {"f1": ["cat", "dog", "mouse"],
         "f2": ["rat", "elephant", "tiger", "dog"]}

word = "dog"
counter = 0

for values in files.values():
    if word in values:
        print(True)
        counter +=1
    else:
        print(False)

print(counter)

answered Dec 29 '20 at 08:52

rozumir

845
9
20

If I have two "dog" in "f1" it should count twice. – Dec 29 '20 at 08:57
1

repleace counter line with that: `counter += values.count(word)` – rozumir Dec 29 '20 at 08:58

How do you count elements of a list that's inside a dictionary?

1 Answers1