使用openpyxl

Question

我正在尝试使用Openpyxl将数据写入现有的excel文件，但是在加载文件时出现类型错误。

这是我的代码：

from openpyxl import load_workbook
wb = load_workbook('file.xlsx')
DriverTableSheet = wb.get_sheet_by_name('sheet1') 
DriverTableSheet.cell(row=1, column=2).value="value"
wb.save('file.xlsx')

这是错误：

Traceback (most recent call last):
  File "modify.py", line 11, in <module>
    wb = load_workbook('file.xlsx')
  File "C:\Python34\lib\site-packages\openpyxl-2.4.0b1-py3.4.egg\openpyxl\reader\excel.py", line 240, in load_workbook
    parser.assign_names()
  File "C:\Python34\lib\site-packages\openpyxl-2.4.0b1-py3.4.egg\openpyxl\packaging\workbook.py", line 74, in assign_nam
es
    sheet = self.wb._sheets[defn.localSheetId]
TypeError: list indices must be integers, not NoneType