所以我得到了我的数据帧(df1):
Number Name Gender Hobby
122 John Male -
123 Patrick Male -
124 Rudy Male -
我想根据数字列向爱好添加数据。假设我根据不同数据帧的编号得到了我的爱好列表。像例子(df2):
Number Hobby
124 Soccer
... ...
... ...
和df3:
Number Hobby
122 Basketball
... ...
... ...
我如何实现此数据框:
Number Name Gender Hobby
122 John Male Basketball
123 Patrick Male -
124 Rudy Male Soccer
到目前为止,我已经尝试过以下解决方案:
Select rows from a DataFrame based on values in a column in pandas
但它只选择一些数据。我怎样才能更新“爱好”#39;专栏? 提前谢谢。
答案 0 :(得分:0)
您可以使用map
,merge
和join
也可以实现
df['Hobby']=df.Number.map(df1.set_index('Number').Hobby)
df
Out[155]:
Number Name Gender Hobby
0 122 John Male NaN
1 123 Patrick Male NaN
2 124 Rudy Male Soccer