openpyxl对象时候报错：TypeError: 'module' object is not callable

代码如下：
import openpyxl

book = openpyxl.workbook()
sh = book.active

sh.title = '工资表'

book.save('ex02.xlsx')

解决：
只需要将workbook的k大写即可

book = openpyxl.Workbook()