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You can convert a Smart Art shape into a group shape using the Shape.get_result_of_smart_art() method. It will enable you to handle a Smart Art shape like a group shape. Consequently, you will have access to the individual parts or shapes of the group shape.
The following sample code loads the sample Excel file containing a Smart Art shape as shown in this screenshot. It then converts the Smart Art shape into a group shape and prints the Shape.IsGroup property. Please see the console output of the sample code given below.

Is Smart Art Shape: True
Is Group Shape: False
Is Group Shape: TrueAnalyzing your prompt, please hold on...
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