import pandas as pd
# https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.html
# https://pandas.pydata.org/docs/reference/api/pandas.Series.html
notas = pd.read_csv("ratings.csv")
notas.head()
notas.shape
notas.columns = ["usuarioID", "filmeID", "nota", "momento"]
notas.head()
notas['nota'].unique()
notas['nota'].value_counts()