group by count dataframe
df.groupby(['col1', 'col2']).size().reset_index(name='counts')group by count dataframe
df.groupby(['col1', 'col2']).size().reset_index(name='counts')python list group by count
>>> a = [1,1,1,1,2,2,2,2,3,3,4,5,5]
>>> d = {x:a.count(x) for x in a}
>>> d
{1: 4, 2: 4, 3: 2, 4: 1, 5: 2}
>>> a, b = d.keys(), d.values()
>>> a
[1, 2, 3, 4, 5]
>>> b
[4, 4, 2, 1, 2]Copyright © 2021 Codeinu
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