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It looks like you can invoke python utilizing VBAs Shell function (as seen in https://stackoverflow.com/questions/3815340/running-python-scripts-from-ms-office). I don't believe there is a Microsoft Word Add-in that can do this so you may have to resort to the script below.
Sub RunExternalProg()
Dim return_value As Double
return_value = Shell("C:\PathToPython\pythonw.exe C:\my_script.py", vbHide)
Debug.Print return_value
End Sub
(Answer by mechanical_meat)
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If this is helpful please accept answer.