如何将合并结果更改为列表并使用 openpyxl 写入列？

Question

我有两个不同的excel要比较...

     Data1.xlsx                                     Data2.xlsx
|  Name   |  Reg Date  |    |  Name   |   City    |  Reg Date  | Gender | Data1.xlsx |
|Annie    | 2021-07-01 |    |Alex     | Hong Kong | 2021-07-04 | Male   |            |
|Billy    | 2021-07-02 |    |Annie    | Hong Kong | 2021-07-01 | Female |            |
|Cathrine | 2021-07-03 |    |Bob      | Taipei    | 2021-07-02 | Male   |            |
|David    | 2021-07-04 |    |Lucy     | Tokyo     | 2021-07-01 | Female |            |
|Eric     | 2021-07-04 |    |David    | London    | 2021-07-04 | Male   |            |
                            |Kate     | New York  | 2021-07-03 | Female |            |
                            |Cathrine | London    | 2021-07-03 | Female |            |
                            |Rose     | Hong Kong | 2021-07-04 | Female |            |

我得到 Name & Reg Date 用于合并键，iloc 用于 Data1.xlsx

import openpyxl as xl
import pandas as pd
dt1 = pd.read_excel('Data1.xlsx')
dt2 = pd.read_excel('Data2.xlsx')
df_merge = pd.merge(dt2, dt1[['Name', 'Reg Date']], on=['Name', 'Reg Date'], how='left', indicator=True)
df_merge['Data1.xlsx'] = np.where(df_merge.pop('_merge').eq('both'), 'Y', 'N')

   Name      City       Reg Date    Gender  Data1.xlsx 
0  Alex      Hong Kong  2021-07-04  Male    N            
1  Annie     Hong Kong  2021-07-01  Female  Y           
2  Bob       Taipei     2021-07-02  Male    N           
3  Lucy      Tokyo      2021-07-01  Female  N           
4  David     London     2021-07-04  Male    Y           
5  Kate      New York   2021-07-03  Female  N           
6  Cathrine  London     2021-07-03  Female  Y           
7  Rose      Hong Kong  2021-07-04  Female  N

merge_loc = df_merge.iloc[:, [4]]

   Data1.xlsx 
0  N            
1  Y           
2  N           
3  N           
4  Y           
5  N           
6  Y           
7  N

我用openpyxl读取Data2.xlsxexcel文件

wb = xl.Workbook('Data2.xlsx')
ws = wb.active

我想请问如何将merge_loc改为带隐藏索引的列表，并使用openpyxl将列表写入Data2.xlsx的第E列？

Answer 1

您需要遍历数组来写入值：

# compute the data
to_write = np.where(df_merge['_merge'].eq('both'), 'Y', 'N')
# array(['N', 'Y', 'N', 'N', 'Y', 'N', 'Y', 'N'], dtype='<U1')

# write the data
import openpyxl as xl

wb = xl.load_workbook('Data2.xlsx')
ws = wb.active

for row, value in enumerate(to_write, start=2):
    ws[f'E{row}'].value = value

wb.save('Data2.xlsx')

如何将合并结果更改为列表并使用 openpyxl 写入列？

How to change merge result to list and use openpyxl write into column?

python

excel

pandas

openpyxl