使用python将excel chart另存为图片png

import win32com.client      
from PIL import ImageGrab   
import os

o = win32com.client.Dispatch("Excel.Application")
o.Visible = 0
o.DisplayAlerts = 0
wb = o.Workbooks.Open(srcfile)

for sheet in wb:
    for n, shape in enumerate(sheet.Shapes):
        shape.Copy()
        image = ImageGrab.grabclipboard()
        image.save(file_path,'png')  # 一般这段代码容易出错，因为剪切板可能没有内容，最好加上try...except...
        pass
    pass
    
wb.Close(True)
o.Quit()