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Pandas count rows with value

Pandas count rows with value

len(df[df['score'] == 1.0])

1

Source: morphocode.com

Pandas count number of rows with value

In [37]:
df = pd.DataFrame({'a':list('abssbab')})
df.groupby('a').count()

Out[37]:

   a
a   
a  2
b  3
s  2

[3 rows x 1 columns]

0

Source: stackoverflow.com

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