为什么我的 header 图像从我的模板中消失了？

Question

I made a template document in Excel which is mostly empty, except for the header which contains the logo of our department (below).

I then read this template document into python using openpyxl and populate it with a data frame. However, when I save the workbook and open the Excel doc, everything is intact except my image disappears.

How can I ensure my logo stays intact in the report? I know I can't insert an image into the header in openpyxl , so I was hoping by including it in my template (and never touching the header) it would stay but it isn't.

Code in Python

from openpyxl import load_workbook
from openpyxl.utils.dataframe import dataframe_to_rows

wb = load_workbook('./template.xlsx')
ws = wb["Sheet1"]

for r in dataframe_to_rows(df, index=False, header=False):
    ws.append(r)

wb.save("{}".format(fn))

Answer 1

Unfortunately openpyxl does not support images at this time, see official documentation: https://openpyxl.readthedocs.io/en/stable/usage.html#read-an-existing-workbook

openpyxl does currently not read all possible items in an Excel file so images and charts will be lost from existing files if they are opened and saved with the same name.

So when you open the template file, the images are not read, thus not saved in the new file. Therefore, you may have to switch to using xlsxwriter.