Answers for "find length of unique entries in dataframe"

1

get count of unique values in column pandas

df = df.groupby('domain')['ID'].nunique()

print (df)
domain
'facebook.com'    1
'google.com'      1
'twitter.com'     2
'vk.com'          3
Name: ID, dtype: int64
Posted by: Guest on May-28-2020
1

pandas count the number of unique values in a column

df['hID'].nunique()
5
Posted by: Guest on May-28-2020

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