อะไรคือ Lost with Against ที่น้อยกว่า 25 และเล่นน้อยกว่า 1?
What is the Lost with Against smaller than 25, and Played smaller than 1?
df = pd.DataFrame(columns=['lost', 'against', 'played'])
df[(df['against'] < 25) & (df['played'] < 1)]['lost'].mean()