如何设置代码以激活标题中包含昨天日期的工作簿？

import datetime
import os
from openpyxl import load_workbook

# 获取昨天的日期
yesterday = datetime.date.today() - datetime.timedelta(days=1)
yesterday_str = yesterday.strftime("%Y-%m-%d")

# 遍历工作簿列表
workbook_dir = "path/to/workbooks"
workbook_files = os.listdir(workbook_dir)

for file in workbook_files:
    if file.endswith(".xlsx"):
        # 加载工作簿
        workbook_path = os.path.join(workbook_dir, file)
        workbook = load_workbook(workbook_path)
        
        # 检查工作簿标题
        if yesterday_str in workbook.title:
            # 激活匹配的工作簿
            workbook.active = True
            break