Why does calling listMaps() return multiples of the same maps in an ArcGIS Pro Project?

KevinCheriyan

I'm using ArcPy to iterate through maps in a Pro project. I have only one map in the Project called "Mines".

However, when I use listMaps to iterate through the maps in the aprx, it returns two values called "Mines". Any ideas why this is? Furthermore, if I list all the layers in each "Mines" map, the layers are slightly different. The first Mines map in the list contains layers that I actually deleted from the Pro Project, but the second one doesn't have this problem. And yes, I saved the Pro Project. 

Here's the code:

 

aprx = arcpy.mp.ArcGISProject(path_to_project)
for mp in aprx.listMaps("Mines"):
     print(mp.name)

Really strange. Someone tell me I'm not in the Twilight Zone.

 

 

KevinCheriyan

Not sure why exactly this is happening, but I reckon this might have something to do with the fact that the Pro Project was created from a map package (.mpk) file, instead of adding layers to a blank Project's map. Regardless of why it happens, this is how I solved it. 

In a Python Notebook from within the Pro Project, I looped through the list of maps in the current Project and renamed the maps that are not active maps to have names other than "Mines". This allows my script that I wrote to access the single map named "Mines" which is what I wanted. Here's the code:

aprx = arcpy.mp.ArcGISProject("CURRENT")
for mp in aprx.listMaps():
    if mp != aprx.activeMap:
        mp.name = "OTHER"