pandas groupby count unique rows

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showing results for - "pandas groupby count unique rows"
Hamza
25 Jan 2017
1df = df.groupby(by='domain', as_index=False).agg({'ID': pd.Series.nunique})
2print(df)
3    domain  ID
40       fb   1
51      ggl   1
62  twitter   2
73       vk   3
8
source
Alia
26 May 2017
1ID, domain
2123, 'vk.com'
3123, 'vk.com'
4123, 'twitter.com'
5456, 'vk.com'
6456, 'facebook.com'
7456, 'vk.com'
8456, 'google.com'
9789, 'twitter.com'
10789, 'vk.com'
11
source
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