Answers for "pandas how to do a group by and a count"

group by count dataframe

df.groupby(['col1', 'col2']).size().reset_index(name='counts')

Posted by: Guest on February-24-2020

group by count dataframe

df.groupby(['col1','col2']).size()

Posted by: Guest on February-25-2020

pandas groupby counts

df[['col1', 'col2', 'col3', 'col4']].groupby(['col1', 'col2']).agg(['mean', 'count'])

Posted by: Guest on November-20-2020

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