type = DataFrame
size = (10600, 10)
----------
by_ncm = ncm18.groupby('codigo')
count_by_ncm = by_ncm['descricao'].count
print(count_by_ncm)
输出为
bound method SeriesGroupBy.count of pandas.core.groupby.SeriesGroupBy object at 0x10ddd9278
---------
I can't see the result... the print command don't work