应该这样做:
>> df = pd.Series([1,1,3,1,1,1,1,1,2])>> df.groupby((df.shift() != df).cumsum()) .filter(lambda x: len(x) < 5)0 11 12 38 2

应该这样做:
>> df = pd.Series([1,1,3,1,1,1,1,1,2])>> df.groupby((df.shift() != df).cumsum()) .filter(lambda x: len(x) < 5)0 11 12 38 2