Pandas - 使用排序索引过滤 dataframe

Question

I have this df_player_means , with 5 items:

Pierre-Emerick Aubameyang    0.629630
Sergio Aguero                0.592593
Danny Ings                   0.555556
Mohamed Salah                0.538462
Sadio Mane                   0.500000

And this df_player_colors , where all players and their respective colors appear multiple times, with 15k items:

Andrew Robertson      #CE1317
Dejan Lovren          #CE1317
Joel Matip            #CE1317
Joseph Gomez          #CE1317
Nathaniel Phillips    #CE1317
                       ...   
Michail Antonio       #7C2C3B
Nathan Holland        #7C2C3B
Pablo Fornals         #7C2C3B
Robert Snodgrass      #7C2C3B
Tomas Soucek          #7C2C3B

---

How do I filter df_player_colors , (or map df_player_means to df_player_colors ), ending up with df_player_unique_colors , with players from df_player_means , in that exact sorted order, alongside their respective colors?

I have tried:

 players = df_player_means.index

 df_player_unique_colors = df_player_colors[df_player_colors.index.isin(players)]

But colors being mapped are wrong..

Answer 1

IIUC, try with join and drop_duplicates maybe if you have duplicated colors for same player

df_player_means.to_frame(name='mean')\
               .join(df_player_colors.to_frame(name='color'), how='left')\
               .drop_duplicates()

or maybe with loc like:

df_player_colors.loc[df_player_means.index]