Я был создан пример изhttp://docs.xlwings.org/en/stable/vba.html /Python 3.5.1 | Anaconda 2.5.0 (32-разрядная версия) | (по умолчанию 29 января 2016 г., 15:46:01)/ и получил ошибку

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Error
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Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "C:\Python3\mymodule.py", line 7, in rand_numbers

    n = int(Range('Sheet1', 'B1').value)  # Write desired dimensions into Cell B1

  File "C:\Python3\lib\site-packages\xlwings\main.py", line 701, in __init__

    self.xl_sheet = xlplatform.get_worksheet(self.xl_workbook, sheet_name_or_index)

  File "C:\Python3\lib\site-packages\xlwings\_xlwindows.py", line 240, in get_worksheet

    return xl_workbook.Sheets(sheet)

  File "C:\Python3\lib\site-packages\win32com\client\dynamic.py", line 192, in __call__

    return self._get_good_object_(self._oleobj_.Invoke(*allArgs),self._olerepr_.defaultDispatchName,None)

pywintypes.com_error: (-2147352567, 'Exception occurred.', (0, None, None, None, 0, -2147352565), None)



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OK   
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