Access current MapDocument not working in .pyt Tool background execution: Is there a workaround?

Manu — Thu, 26 Jan 2023 12:06:31 GMT

I need to run an ArcMap 10.8 Python Toolbox tool in background*. However, I need to add a layer to the MapDocument. In foreground execution, the current map can be accessed through the "CURRENT" keyword like this:

mxd = arcpy.mapping.MapDocument("CURRENT")

The documentation says nothing about referencing the MapDocument by its full path during background processing. However, when I tried the following

import arcpy mxd = ap.mapping.MapDocument("CURRENT") global path path = mxd.filePath del mxd class Toolbox(...): [...] class SomeTool(...): [...] def execute(...): global path mxd = ap.mapping.MapDocument(path) return

the tool fails with a severe error during background processing, but I cannot find out why. Also, I need to find some work-around to solve this issue...

* the tool absolutely needs these two properties: Not lock the ArcMap main window during execution and add/remove layers from the Map.

topic Access current MapDocument not working in .pyt Tool background execution: Is there a workaround? in ArcMap Questions

Access current MapDocument not working in .pyt Tool background execution: Is there a workaround?