Counting the number of times a value appears in a list

Question

This is my starting point. I have separated the specific column of my data which I want to count the specific number of times 0 and 1 appear

print(sr.count(0))

AttributeError: 'Int64Index' object has no attribute 'levels'

I have tried using the above code but it states and as evident the AttributeError shows up.

Is that a pandas dataframe? (I'm wondering if those would be relevant tags for this Q.) — TrebledJ, Mar 24 '19 at 05:14
Possible duplicate of [count the frequency that a value occurs in a dataframe column](https://stackoverflow.com/questions/22391433/count-the-frequency-that-a-value-occurs-in-a-dataframe-column) — awesoon, Mar 24 '19 at 05:14

score 2 · Accepted Answer · answered Mar 24 '19 at 04:58

2

You have to make it a list first:

print(sr.tolist().count(0))

Then it would be good.

Output:

answered Mar 24 '19 at 04:58

U13-Forward

score 0 · Answer 2 · answered Mar 24 '19 at 05:43

0

Collections has a Counter class, try:

from collections import Counter
cntr = Counter() 
cntr.update(sr.tolist())

cntr will now have sr as its keys and the count of them as its values. Hope that helps.

answered Mar 24 '19 at 05:43

hd1

2 Answers2