如何以编程方式截取Excel单元格区域的屏幕截图？

import openpyxl
from PIL import ImageGrab

# 打开Excel文件
workbook = openpyxl.load_workbook('example.xlsx')

# 选择指定的工作表
worksheet = workbook['Sheet1']

# 定位到要截取的单元格区域
cell_range = worksheet['A1:C3']

# 获取单元格区域的位置和大小
left = cell_range[0][0].coordinate.column
top = cell_range[0][0].coordinate.row
right = cell_range[-1][-1].coordinate.column
bottom = cell_range[-1][-1].coordinate.row

# 计算截图区域的坐标和大小
left_px, top_px, right_px, bottom_px = worksheet.cell(row=top, column=left).coordinate.anchor
width = (right - left + 1) * (right_px - left_px)
height = (bottom - top + 1) * (bottom_px - top_px)

# 截取屏幕截图
screenshot = ImageGrab.grab(bbox=(left_px, top_px, left_px + width, top_px + height))

# 保存截图到文件
screenshot.save('screenshot.png')