pandas df groupby by column count values and create new column code example
Example 1: group by count dataframe
df.groupby(['col1', 'col2']).size().reset_index(name='counts')Example 2: group by count dataframe
df.groupby(['col1','col2']).size()df.groupby(['col1', 'col2']).size().reset_index(name='counts')df.groupby(['col1','col2']).size()