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pandas count rows with value Code Example
pandas count rows with value
len(df[df['score'] == 1.0])
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]




Python

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