對於帶 f 弦的循環，帶 pandas dataframe

Question

我需要嘗試創建兩個循環（必須分開）：

LOOP 1) 對於每個水果：

1. 如果該水果為真，則保持行
2. 刪除具有重復日期的行（可以刪除任何一行）
3. 將上述結果保存為每個水果的 dataframe

循環 2) 為每個 dataframe 創建，在fruit_score 上繪制日期：

    concat   apple_score  banana_score       date        apple      banana  
1   apple     0.400         0.400        2010-02-12      True        False  
2   banana    0.530         0.300        2010-01-12      False       True   
3   kiwi      0.532          0.200       2010-03-03      False       False  
4   bana      0.634         0.100        2010-03-03      False       True   

我試過了：

fruits = ['apple',  'banana',   'orange']
for fruit in fruits:
    selected_rows = df[df[ fruit ] == True ]
    df_f'{fruit}' = selected_rows.drop_duplicates(subset='date')

for fruit in fruits:
    df_f'{fruit}'.plot(x="date", y=(f'{fruit}_score'), kind="line")

Answer 1

你應該按照@youyoun 的建議做一些事情：

dfs = {}
fruits = ['apple',  'banana']
for fruit in fruits:
    selected_rows = df[df[ fruit ] == True ].drop_duplicates(subset='date')
    dfs[f'df_{fruit}'] = selected_rows

for a,v in dfs.items():
    print(a)
    print(v)

Output：

df_apple
  concat  apple_score  banana_score        date  apple  banana
1  apple          0.4           0.4  2010-02-12   True   False
df_banana
   concat  apple_score  banana_score        date  apple  banana
2  banana        0.530           0.3  2010-01-12  False    True
4    bana        0.634           0.1  2010-03-03  False    True