[python-win32] Can't figure out how to get the Excel copy method to work correctly.

[Bob Gailer]

At 10:44 AM 8/23/2004, Joe Goldthwaite wrote:
>Hello Everyone,
>
>This is my first post to this list.  I ran into a problem while converting
>some old VB applications to Python and I don't have a clue on how to get
>around it.  I have this sample VB subroutine;
>
>    Sub Test()
>        Set XLApp = CreateObject("Excel.Application")
>        XLApp.Visible = -1
>        Set XLWorkbook = XLApp.Workbooks.Open("c:\Someworkbook.xls")
>        Set XLWorksheets = XLWorkbook.Worksheets
>        Set LastWorksheet = XLWorksheets(XLWorksheets.Count)
>        XLWorksheets(1).Copy After:=LastWorksheet
>    End Sub
>
>
>What is does is made a copy of worksheet 1 and puts it as the last tab of
>the workbook.  The worksheet copy method says that if you specify the
>"Before" or "After" parameters, it inserts the copy before or after the
>worksheet passed.  is means that you have to pass a worksheet object to the
>copy method. If you leave the before or after parameters off, the new
>worksheet is copied to a new workbook. The above code works fine.  Here's my
>Python equivalent;
>
>    from win32com.client import Dispatch
>
>    XLApp = Dispatch("Excel.Application")
>    XLApp.Visible = -1
>    XLWorkbook =
>XLApp.Workbooks.Open("c:\EFS01.0\Extensions\ISRecapTemplate.xls")
>    XLWorksheets = XLWorkbook.Worksheets
>    LastWorksheet = XLWorksheets(XLWorksheets.count)

At which pont I get:
AttributeError: '<win32com.gen_py.Microsoft Excel 9.0 Object Library.Sheets 
instance at 0x34498360>' object has no attribute 'count'

After capitalizing Count and rerunning I get a 4th worksheet in one book. 
Don't know why your mileage varies.

>    XLWorksheets(1).Copy(After=LastWorksheet)
>
>When this is run, the worksheet get's copied to a new workbook instead of
>getting appended to the existing workbook.  I know it's passing something to
>the "After" parameter because if I spell "After" with a lower case "A", I
>get an error that it's an unknown method.  I also know that LastWorksheet
>has a reference to the last worksheet in the workbook because I can see all
>the properties.  For some reason, Excel doesnt' recognize LastWorksheet as a
>valid worksheet reference.
>
>I suspect that the Win32 routines are doing some translating of the COM
>objects so they can work from python but doesn't do it if you pass a COM
>object as a parameter.  Does anyone have any ideas on how I can get this
>functionality working?
>
>Thanks.
>
>Joe Goldthwaite
>
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Bob Gailer
bgailer at alum.rpi.edu
303 442 2625 home
720 938 2625 cell