Предполагая, что содержание races.csv
равно:
Race Course,Horse,Year,Month,Day,Amount,Won/Lost
Aintree,Red Rum,2017,5,12,11.58,won
Punchestown,Camelot,2016,12,22,122.52,won
Sandown,Beef of Salmon,2016,11,17,20.00,lost
Ayr,Corbiere,2016,11,3,25.00,lost
Fairyhouse,Red Rum,2016,12,2,65.75,won
Ayr,Camelot,2017,3,11,12.05,won
Aintree,Hurricane Fly,2017,5,12,11.58,won
Punchestown,Beef or Salmon,2016,12,22,112.52,won
Sandown,Aldaniti,2016,11,17,10.00,lost
Ayr,Henry the Navigator,2016,11,1,15.00,lost
Fairyhouse,Jumanji,2016,10,2,65.75,won
Ayr,Came Second,2017,3,11,12.05,won
Aintree,Murder,2017,5,12,5.00,lost
Punchestown,King Arthur,2016,6,22,52.52,won
Sandown,Filet of Fish,2016,11,17,20.00,lost
Ayr,Denial,2016,11,3,25.00,lost
Fairyhouse,Don't Gamble,2016,12,12,165.75,won
Ayr,Ireland,2017,1,11,22.05,won
Шаги для получения нового кадра данных:
>>> races_df = pd.read_csv('races.csv')
>>> races_df
Race Course Horse Year Month Day Amount Won/Lost
0 Aintree Red Rum 2017 5 12 11.58 won
1 Punchestown Camelot 2016 12 22 122.52 won
2 Sandown Beef of Salmon 2016 11 17 20.00 lost
3 Ayr Corbiere 2016 11 3 25.00 lost
4 Fairyhouse Red Rum 2016 12 2 65.75 won
5 Ayr Camelot 2017 3 11 12.05 won
6 Aintree Hurricane Fly 2017 5 12 11.58 won
7 Punchestown Beef or Salmon 2016 12 22 112.52 won
8 Sandown Aldaniti 2016 11 17 10.00 lost
9 Ayr Henry the Navigator 2016 11 1 15.00 lost
10 Fairyhouse Jumanji 2016 10 2 65.75 won
11 Ayr Came Second 2017 3 11 12.05 won
12 Aintree Murder 2017 5 12 5.00 lost
13 Punchestown King Arthur 2016 6 22 52.52 won
14 Sandown Filet of Fish 2016 11 17 20.00 lost
15 Ayr Denial 2016 11 3 25.00 lost
16 Fairyhouse Don't Gamble 2016 12 12 165.75 won
17 Ayr Ireland 2017 1 11 22.05 won
>>>
>>> total_races = len(races_df)
>>>
>>> total_win = races_df[races_df['Won/Lost'] == 'won']['Won/Lost'].count()
>>>
>>> new_df = pd.DataFrame({'total_races': total_races, 'total_win': total_win}, index=pd.RangeIndex(1))
>>>
>>> new_df
total_races total_win
0 18 11