将值从字典替换为多索引数据框

Question

Have first dataframe (df1) as follows:

                    Machine Product Value ...
Site TLA    Date            
TH   ABC    08-Oct  A10     RodA    35
            09-Oct  A10     RodA    20
            10-Oct  A11     RodB    22
…                   
ID   ABC    09-Oct  B5      HookY   28
            08-Oct  B8      HookZ   33
…       

...some of whose columns (Machine and Value) need to be replaced with another dataframe (df2) as follows:

                    Machine Value
Site    TLA Date        
TH      ABC 08-Oct  A10     28
            09-Oct  A10     35
            10-Oct  A11     37
…               
ID      ABC 09-Oct  B5      12
            08-Oct  B8      5
…       

Tried to make a df2.to_dict(orient='index'), but stuck. How to map/replace this dictionary to the Machine, Value in df1?

Answer 1

没有可复制的示例 ，很难确定，但是您应该能够做到

df1.loc[df2.index] = df2