Move Layer

Question

I am trying to move TOC layers with the following python code, seems simple enough. Basically i am trying to move TaxParcels1 layer above the Sections layer of my current mxd but i am not sure why i keep getting the error is it because my layers start with an upper case? Also do i have to save to a new mxd for the layer move to happen? import arcpy mxd = arcpy.mapping.MapDocument(r"C:\Temp\Split MXD.mxd") df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0] for lyr in arcpy.mapping.ListLayers(mxd, "", df): if lyr.name.lower() == "Taxparcels1": moveLayer = lyr if lyr.name.lower() == "Sections": refLayer = lyr arcpy.mapping.MoveLayer(df, refLayer, moveLayer, "BEFORE") #mxd.saveACopy(r"C:\Temp\Split MXD2.mxd") del mxd‍‍‍‍‍‍‍‍‍‍‍‍ Error Runtime error Traceback (most recent call last): File "", line 12, in File "c:\program files (x86)\arcgis\desktop10.4\arcpy\arcpy\utils.py", line 182, in fn_ return fn(*args, **kw) File "c:\program files (x86)\arcgis\desktop10.4\arcpy\arcpy\mapping.py", line 1677, in MoveLayer assert move_c is not None, 'Did not find move layer.' AssertionError: Did not find move layer.‍‍‍‍‍‍‍‍

RandyBurton · Answer

You should not have to rename your TOC layers. The "lyr.name.lower()" converts the layer name to lower case letters, and then it is compared to a specified lower case string. If you want to save the changes you will need to use either: # save the current mxd mxd.save() # or save a copy mxd.saveACopy(r"C:\Temp\Split MXD2.mxd")‍‍‍‍‍‍‍‍‍‍

DarrenWiens2 · Answer

I think you're thinking about this backwards:

if lyr.name.lower() == "Taxparcels1":

The layer you're inspecting is "lyr". It has a name, maybe "TaXpArCeLs1". The .lower() representation would be "taxparcels1". In any case, no lyr.name.lower() will ever equal "Taxparcels1" because it has an uppercase letter.

CCWeedcontrol · Answer

I would have to rename my TOC layer to taxparcels1 & sections. Which i done, i didn't want to do that but that got me passed the error but nothing happened.

So that brings me to the other question, do i have to use mxd.saveACopy in order for the taxparcels1 layer to be on top of sections?