topic Re: Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script in Python Snippets Questions

Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script

BruceGreen — Sun, 12 Dec 2021 08:27:26 GMT

I am trying to add a Feature Class from a Geodatabase Dataset to an MXD and save a copy like this but I am getting following errors on each methos

import arcpy
import os

arcpy.env.workspace = r"C:\arcgis\ArcTutor\AAA\MXDs"
MXD = arcpy.mapping.MapDocument(r"C:\arcgis\ArcTutor\AAA\MXDs\map.mxd")
DF = arcpy.mapping.ListDataFrames(MXD)[0]

lyr = arcpy.mapping.Layer("C:\arcgis\ArcTutor\AAA\GDBs\Delaware.gdb\Kent\Kent")
arcpy.mapping.AddLayer(DF, layer, "AUTO_ARRANGE")
MXD.saveACopy('newmxd.mxd')
del MXD
print(" Done")‍‍‍‍‍‍‍‍‍‍‍‍

and

import arcpy
import os
arcpy.env.workspace = r"C:\arcgis\ArcTutor\AAA\MXDs"
MXD = arcpy.mapping.MapDocument(r"C:\arcgis\ArcTutor\AAA\MXDs\map.mxd")
DF = arcpy.mapping.ListDataFrames(MXD)[0]

lyr = "C:\arcgis\ArcTutor\AAA\GDBs\Delaware.gdb\Kent\Kent"

arcpy.MakeFeatureLayer_management(lyr, 'shplyr')
arcpy.mapping.AddLayer(DF, lyr, "AUTO_ARRANGE")
print(" Step 4")
MXD.saveACopy('newmxd.mxd')
del MXD
print(" Done")‍‍‍‍‍‍‍‍‍‍‍‍‍‍

arcpy

Re: Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script

DanPatterson_Retired — Sun, 12 Dec 2021 08:27:28 GMT

you were doing so well on the raw encoding, then you stopped

"C:\arcgis\ArcTutor\AAA\GDBs\Delaware.gdb\Kent\Kent"

'C:\x07rcgis\\ArcTutor\\AAA\\GDBs\\Delaware.gdb\\Kent\\Kent'‍‍‍

notice what \a produces \x07rcgis

raw encode, double backslashes or single forward slashes

Re: Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script

BruceGreen — Sun, 12 Dec 2021 08:27:31 GMT

Hi Thank and Thanks for reply I changed the code to

import arcpy
import os
arcpy.env.workspace = r"C:\\arcgis\\ArcTutor\\AAA\\MXDs"
MXD = arcpy.mapping.MapDocument(r"C:\\arcgis\\ArcTutor\\AAA\\MXDs\\map.mxd")
DF = arcpy.mapping.ListDataFrames(MXD)[0]
lyr = "C:\\arcgis\\ArcTutor\\AAA\\GDBs\\Delaware.gdb\\Kent\\Kent"
arcpy.MakeFeatureLayer_management(lyr, 'shplyr')
arcpy.mapping.AddLayer(DF, lyr, "AUTO_ARRANGE")
print(" Step 4")
MXD.saveACopy('newmxd.mxd')
del MXD
print(" Done")‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

and now I am getting AssertionError: on assert isinstance(add_layer, Layer)

File "C:\Program Files (x86)\ArcGIS\Desktop10.6\ArcPy\arcpy\mapping.py", line 49, in AddLayer
 assert isinstance(add_layer, Layer)
AssertionError‍‍‍

Re: Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script

DanPatterson_Retired — Fri, 19 Oct 2018 20:53:58 GMT

line 6 isn't a layer as in *.lyr

line 7 you make a feature layer.. form lyr, and you call it 'shplyr'... did you try that in line 8? since line 6 won't work.

also be prepared that AddLayer with become addLayer in ArcGIS Pro... subtle differences

Re: Not Able to Add FC from GDB Dataset to an MXD using ArcPy Stand Alone Script

JoshuaBixby — Sun, 12 Dec 2021 08:27:34 GMT

Try:

import arcpy
import os
arcpy.env.workspace = r"C:\\arcgis\\ArcTutor\\AAA\\MXDs"
MXD = arcpy.mapping.MapDocument(r"C:\\arcgis\\ArcTutor\\AAA\\MXDs\\map.mxd")
DF = arcpy.mapping.ListDataFrames(MXD)[0]
fc = "C:\\arcgis\\ArcTutor\\AAA\\GDBs\\Delaware.gdb\\Kent\\Kent"
lyr = arcpy.MakeFeatureLayer_management(fc, 'shplyr')[0]
arcpy.mapping.AddLayer(DF, lyr, "AUTO_ARRANGE")
print(" Step 4")
MXD.saveACopy('newmxd.mxd')
del MXD
print(" Done")‍‍‍‍‍‍‍‍‍‍‍‍