在 pandas 中合并人名字符串

Question

我有两个要根据人名合并的数据集。 一个数据集player_nationalities有他们的全名：

Player, Nationality
Kylian Mbappé, France
Wissam Ben Yedder, France
Gianluigi Donnarumma, Italy

另一个数据集player_ratings用句号缩短他们的名字并保留其他名字。

Player, Rating
K. Mbappé, 93
W. Ben Yedder, 89
G. Donnarumma, 91

如何根据 Player 列合并这些表并避免合并具有相同姓氏的人？ 这是我的尝试：

df = pd.merge(player_nationality, player_ratings, on='Player', how='left')

Player, Nationality, Rating
K. Mbappé, France, NaN
W. Ben Yedder, France, NaN
G. Donnarumma, Italy, NaN

Answer 1

您需要标准化两个 DataFrame 中的键才能合并它们。 一个想法是创建一个函数来处理player_nationalities中的全名并合并处理后的玩家姓名值。 例如：

def convert_player_name(name):
    try:
        first_name, last_name = name.split(' ', maxsplit=1)
        return f'{first_name[0]}. {last_name}'
    except ValueError:
        return name

    

player_nationalities['processed_name'] = [convert_player_name(name) for name in player_nationalities['Player']]
df_merged = player_nationalities.merge(player_ratings, left_on='processed_name', right_on='Player')

[出去]

               Player_x Nationality processed_name       Player_y  Rating
0         Kylian Mbappé      France      K. Mbappé      K. Mbappé      93
1     Wissam Ben Yedder      France  W. Ben Yedder  W. Ben Yedder      89
2  Gianluigi Donnarumma       Italy  G. Donnarumma  G. Donnarumma      91