OLEObjects类的添加方法失败

我想在Python中使用OLEObjects在另一个Excel文档中添加一个Excel文档，但是我得到这个错误：

d:\Python\PythonReport>d:/Python27/python.exe genDP.py d:/Python/PythonReport/ATP.xlsx Traceback (most recent call last): File "genDP.py", line 219, in <module> add_ATP_WorkBook(OutputBook, sys.argv[1]) File "genDP.py", line 212, in add_ATP_WorkBook oleObjects.Add(ClassType=None, Filename=file, Link=False, DisplayAsIcon=False, Left=0, Top=0, Width=50, Height=50) File "<COMObject OLEObjects>", line 6, in Add pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, u'Microsoft Office Excel', u'Add method of OLEObjects class failed', u'C:\\Program Files (x86)\\Microsoft Office\\Office12\\1033\\XLMAIN11.CHM', 0, -2146827284), None) 

奇怪的是，它适用于其他文件的事实：我可以很容易地添加文本文档作为OLEObject，但是当我尝试使用Excel文档时，我得到了该错误。

这是代码：

 def add_ATP_WorkBook(OutputBook, file): ExcelApp = win32com.client.Dispatch("Excel.Application") ExcelApp.visible = 1 workbook = ExcelApp.Workbooks.open(str(os.path.abspath(os.path.dirname(sys.argv[0])))+"\DVPR Report.xls") oleObjects = workbook.ActiveSheet.OLEObjects() oleObjects.Add(ClassType=None, Filename=file, Link=False, DisplayAsIcon=False, Left=0, Top=0, Width=50, Height=50) workbook.Worksheets('Recognition Rate').Activate()