您可以从现有的Excel文件中抓取图像，如下所示：
from PIL import ImageGrab
import win32com.client as win32
excel = win32.gencache.EnsureDispatch('Excel.Application')
workbook = excel.Workbooks.Open(r'C:\Users\file.xlsx')
for sheet in workbook.Worksheets:
for i, shape in enumerate(sheet.Shapes):
if shape.Name.startswith('Picture'):
shape.copy()
image = ImageGrab.grabclipboard()
image.save('{}.jpg'.format(i+1), 'jpeg')
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