def initialize_workbook（文件路径）：
lock.acquire()
#workbook = load_workbook(file_path)
workbook = load_workbook(file_path, read_only=False, keep_links=False)
sheet = workbook['Clients']
return workbook, sheet
def read_cell（文件路径，行，列）：
workbook, sheet = initialize_workbook(file_path)
value = sheet.cell(row=row, column=column).value
lock.release()
尝试使用 openpyxl 从 excel 中读取单元格时，会定期出现错误（zipfile.BadZipFile: File is not a zip file）。如何处理错误