how to count unique values in a column dataframe in python

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Mateo
30 Oct 2020
1df = df.groupby('domain')['ID'].nunique()
2
3print (df)
4domain
5'facebook.com'    1
6'google.com'      1
7'twitter.com'     2
8'vk.com'          3
9Name: ID, dtype: int64
source
Chris
08 Jan 2021
1len(df[df['score'] == 1.0])
source
Aerona
05 Aug 2019
1pd.value_counts(df.Account_Type)
2
3Gold        3
4Platinum    1
5Name: Account_Type, dtype: int64
source
Lennart
06 Oct 2019
1dataframe.column.nunique()
source
Brendon
25 Jul 2018
1df.iloc[1:3, 5:7]
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