Answers for "calculate number of rows in dataframe"

get number of rows pandas

number_of_rows = len(df)

Posted by: Guest on June-02-2020

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]

Posted by: Guest on October-25-2020

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