xlwings wipes out my EXCEL addin
Question: I own a professional Addin for EXCEL called Valuesoft. It performs several
calculations related to equity (stockmarket) data. It is a 160K dll file and
works fine from EXCEL including from VBA scripts. However, as soon as an EXCEL
file (Workbook) is opened using xlwings from Python the dll disappears (along
with the Addins tag on the EXCEL menu).


Answer: [This question](http://stackoverflow.com/questions/32076150/excel-custom-add-
in-not-loading-when-instance-of-excel-is-opened-by-another-appl) or this [msdn
article](https://support.microsoft.com/en-us/kb/213489) seem to explain what's
happening and give you a workaround.

Since you are using an xll add-in, adopting msdn's code sample to xlwings
should look something like that:

    
    
    import xlwings as xw
    wb = xw.Workbook('YourWorkbook.xls')
    app = xw.Application(wb)
    app.xl_app.RegisterXLL("YourAddIn.xll")
    

