How to dynamically create lyr file in arcpy (for use with group layer)

[المشرف العام]

I'm trying to create an mxd that can dynamically create and name group layers, and populate them with various feature layers. I've seen some examples of how to do this, such as : Creating empty group layer within existing group layer using arcpy.mapping?

The basics seem to be: reference an empty layer file:

• groupLayer = arcpy.mapping.Layer(r"D:\Test\GroupTest.lyr")

Add it to the map:

• arcpy.mapping.AddLayer(df, groupLayer, "BOTTOM")
  
• listedGroupLayer = arcpy.mapping.ListLayers(mxd, "GroupTest", df)[0]
  

Then add some layer to it:

• addLayer = arcpy.mapping.layer(r"D\Test\Rivers.lyr")
  
• arcpy.mapping.AddLayerToGroup(df, listedGroupLayer, addLayer, "BOTTOM")[0]
  

I'm getting stuck on the first step: I need to dynamically create an empty layer file (based off of group layer names in a spreadsheet), before referencing it.

Any examples of how to create an empty layer file (rather than reference one), within python?

Thank you,

David



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