pandas count

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Niklas
26 Sep 2019
1len(df[df['score'] == 1.0])
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Hannah
05 Feb 2019
1df = pd.DataFrame({'a':list('abssbab')})
2df.groupby('a').count()
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Alessia
20 Apr 2018
1df['freq'] = df.groupby('myvar')['myvar'].transform('count')
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Isabel
02 Aug 2016
1>>> df.set_index(["Person", "Single"]).count(level="Person")
2        Age
3Person
4John      2
5Lewis     1
6Myla      1
7
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