Python Script Failure to add derived shapefile to current map document

Question

I'm trying to do some work using Python 2.7 and ArcGIS Desktop 10.7.1 - I know old software. For some reason that I cannot figure out, my script adds the derived featureclass / shapefile and then when the script finishes, the layer is no longer in my TOC. I've tried many of the suggestions I have found on the internet and nothing will make it stick.

 # Accessing the current open ArcMap project. mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd)[0] '''addLayer = arcpy.mapping.Layer(PATH + os.sep + "sel_GVILandscapePolygon.shp")''' '''addLayer = arcpy.mapping.Layer(r"E:\Junk\GVI_Query\sel_GVILandscapePolygon.shp")''' FnShp = PATH + os.sep + "sel_GVILandscapePolygon.shp" addLayer = arcpy.mapping.Layer(FnShp) arcpy.mapping.AddLayer(df, addLayer, "TOP") arcpy.RefreshTOC() mxd.save()

Any thoughts?

TomazicM · Accepted Answer · 2023-01-25 18:14:26Z

I never quite found out why my derived output would not stay in my TOC; however, I did get it work by returning my input path variable to the root of the script.

if __name__ == '__main__': # Return the Path variable from the main module. PATH = Main (arcpy) # Accessing the current open ArcMap project & dataframe. mxd = arcpy.mapping.MapDocument("CURRENT") df = arcpy.mapping.ListDataFrames(mxd)[0] # Create a vaiable to provide the pathway to the shapefile that I want to add to my map. FnShp = PATH + os.sep + "sel_GVILandscapePolygon.shp" # Add the layer, refresh the TOC and save the mxd. addLayer = arcpy.mapping.Layer(FnShp) arcpy.mapping.AddLayer(df, addLayer, "TOP") arcpy.RefreshTOC() mxd.save() # Clean up and terminate. del arcpy, mxd, df, FnShp, addLayer sys.exit(0)

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