如何使用python仅更改excel工作簿的一张工作表的格式？

pip install openpyxl

from openpyxl import Workbook
from openpyxl import load_workbook

wb = load_workbook('example.xlsx')

# 选择当前活动的工作表
ws = wb.active

# 选择指定名称的工作表
ws = wb['Sheet1']

ws.column_dimensions['A'].width = 20  # 设置A列的宽度为20

from openpyxl.styles import Font

font = Font(name='Arial', bold=True, italic=True)
ws['A1'].font = font  # 设置A1单元格的字体样式

from openpyxl.styles import Border, Side

border = Border(left=Side(border_style='thin', color='FF000000'),
                right=Side(border_style='thin', color='FF000000'),
                top=Side(border_style='thin', color='FF000000'),
                bottom=Side(border_style='thin', color='FF000000'))
ws['A1'].border = border  # 设置A1单元格的边框

wb.save('example_modified.xlsx')