/Python/Pandas count the number of unique values in a column

Pandas count the number of unique values in a column

Return count of unique values pandas

#TO count repetition of each unique values(to find How many times the same-
# unique value is appearing in the data)

item_counts = df["Your_Column"].value_counts()
#Returns Dictionary => {"Value_name" : number_of_appearences}

How to count number of unique values in a column python

pd.value_counts(df.Account_Type)

Gold        3
Platinum    1
Name: Account_Type, dtype: int64

Source: stackoverflow.com

Unique values in dataframe column count

df.groupby('mID').agg(['count', 'size', 'nunique']).stack()


             dID  hID  uID
mID                       
A   count      5    5    5
    size       5    5    5
    nunique    3    5    5
B   count      2    2    2
    size       2    2    2
    nunique    2    2    2
C   count      1    1    1
    size       1    1    1
    nunique    1    1    1

Source: stackoverflow.com

Pandas count the number of unique values in a column

df['hID'].nunique()
5

Source: stackoverflow.com

Similar codes

0 vote355 views1 answer
How to add new column in django
Python Django
1 vote349 views3 answers
Pdf to string python
Python
0 vote318 views1 answer
Print format round python
Python
0 vote416 views2 answers
How to close a flask web server with python
Python Flask
0 vote298 views1 answer
Comparing values in python
Python
0 vote257 views1 answer
Unhapppy man with monwy
Python
0 vote292 views1 answer
Python read column data from text file
Python
0 vote318 views1 answer
How to correlation with axis in pandas
Python
6 votes283 views2 answers
Pygame size of image
Python
0 vote279 views1 answer
Do while python using dates
Python