Given a Pandas #, with data in a structure of this type:
import pandas as pd
raw_data = {
'tipo': ['a', 'a', 'b', 'c', 'c', 'c', 'd'],
'ano': [2000, 2000, 2000, 2001, 2001, 2001, 2001],
}
df = pd.DataFrame.from_dict(raw_data)...
asked by
30.04.2014 / 15:07