比较两个数据帧并返回值

Question

I am new to programming and would like to get some suggestions on the given question.

DF_1 = r'H:\test\Output.xlsx'

Object	Code	Word	A	B	C	D	E
AXe	31001	funktion	GFK	house	1010	100	100
AY	31001	Start	GFK	hotel	1020	200	200

DF_2 = r'H:\test\input.xlsx'

Obj	AB	BC	CD	EF	GH
0	31001	0	0	0	1010
0	31001	0	0	0	1020

I would like to compare these 2 excel files and append the ouput to the columns in the excel_2.

output:

Obj	AB	BC	CD	EF	GH
AXe	31001	funktion	GFK	house	1010
AY	31001	Start	GFK	hotel	1020

Answer 1

It is a matter of simple merge. However, you'll need to rename the columns later.

out = pd.merge(df2['AB', 'GH'], df1, how='left', left_on=['AB', 'GH'], right_on=['Code', 'C'])

out.rename(columns={
    'Object': 'Obj',
    'Word': 'BC',
    'A': 'CD',
    'B': 'EF',
}, inplace=True)