Hi
this syntax
clr.AddReferenceByName('Microsoft.Office.Interop.Excel, Version=11.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' )
is specific to IronPython, swicth the engine to IronPython2 or IronPython3
If you want to use Excel Interrop with PythonNet (CPython3 or PythonNet3), you’ll need to use Reflection or cast COM objects.
Example