Value_counts() in pandas

>>> index = pd.Index([3, 1, 2, 3, 4, np.nan])
>>> index.value_counts()
3.0    2
4.0    1
2.0    1
1.0    1
dtype: int64

Source: pandas.pydata.org

Df.value_counts to dataframe

df = df.value_counts().rename_axis('unique_values').reset_index(name='counts')
print (df)
   unique_values  counts
0              2       3
1              1       2

Source: stackoverflow.com

Plot value counts pandas


df.letters.value_counts().sort_values().plot(kind = 'barh')

Source: stackoverflow.com

Count unique pandas

df.nunique()

Count values python

from collections import Counter
values=np.ones(10)
Counter(values)

Use of value_counts in python

use of value_counts()

Similar codes

0 vote219 views1 answer
AttributeError: 'psycopg2.extensions.Column' object has no attribute '_asdict'
Python
5 votes231 views3 answers
How to save unzipped files in python
Python
2 votes190 views1 answer
Printing with format float to 2 decimal places python
Python
0 vote196 views1 answer
Supervisor gunicorn virtualenv flask
Python
6 votes181 views6 answers
Pandas drop missing values for any column
Python
1 vote194 views2 answers
How to map array of string to int in python
Python
15 votes215 views2 answers
Python from timestamp to string
Python
0 vote199 views1 answer
Pandas replace last cell
Python
0 vote187 views1 answer
How to print 2 list in python as table
Python
0 vote195 views1 answer
Extract all bounding boxes using OpenCV Python
Python