arcpy.da.InsertCursor - Objects cannot be updated outside edit session in ArcMap10.8

Question

I am trying to copy features from a Feature Class in a GDB to a Feature Class within a Feature Dataset (Turn_Restrictions that is created by the Network Analyst process [i.e. arcpy.CreateNetworkDatasetFromTemplate_na]) in the same GDB and get

*** Remote Interpreter Reinitialized  ***
2021-12-18 09:57:09.639000
[u'TR_Complex', u'TR_Simple']
[u'navigation_NetFD']
D:\Projects\navigation_Net.gdb\navigation_NetFD Turn_Restrictions
(1, (152.9809017500001, -27.267402999999973), 0.00019980302798811497, u'0000514c-4400-4600-0000-0000283baec4', u'8I', u'2', u'2103')
Traceback (most recent call last):
  File "D:\Projects\Create_Network.py", line 282, in <module>
    targetCursor.insertRow(row)
RuntimeError: Objects in this class cannot be updated outside an edit session [Turn_Restrictions]

I have looked at Featureclasses with attachments: objects cannot be updated outside edit session and similar. I have tried having the data editable in ArcMap while running the python code as well.

The two tables do have a different structure and I can copy/paste the records but need to use ArcPy to automate it.

The data that needs to be edited is

Data Type:  File Geodatabase Feature Class 
Database:   D:\Projects\navigation_Net.gdb
Feature Dataset:    navigation_NetFD
Feature Class:  Turn_Restrictions
Feature Type:   Simple
Geometry Type:  Line
Coordinates have Z values:  No 
Coordinates have measures:  No 

Related code

gdbPath = r'D:\Projects\navigation_Net.gdb'
#List FC and FD in the gdb
#Ref https://gis.stackexchange.com/questions/210929/accessing-feature-class-from-file-geodatabase-for-intersect-in-arcpy
#Ref https://gis.stackexchange.com/questions/114067/listing-all-feature-datasets-and-feature-classes-from-single-geodatabase-into-cs

arcpy.env.workspace = gdbPath
shapes = arcpy.ListFeatureClasses()
print (shapes)
shapeList = list()
for shape in shapes:
    print shape
    #targetCursor = arcpy.da.InsertCursor(,"*")
datasetList = arcpy.ListDatasets('*','Feature')
print datasetList
for dataset in datasetList:
    arcpy.env.workspace = dataset
    fcList = arcpy.ListFeatureClasses()
    for fc in fcList:
        if fc=="Turn_Restrictions":
            print arcpy.env.workspace,fc
            break

targetCursor = arcpy.da.InsertCursor(fc,"*")
# Setup a search cursor on our new data and interate the rows
with arcpy.da.SearchCursor(os.path.join(gdbPath,shape),"*") as cursor:
    for row in cursor:
        print (row)
        #Insert into the target dataset (only Points or tabular data if using an asterisk)
        targetCursor.insertRow(row)

How do I make this editable? Similar code for FC's works fine.

Is it something to do with the field_names and setting the SHAPE@ value as per https://pro.arcgis.com/en/pro-app/latest/arcpy/data-access/insertcursor-class.htm ?

EDITED CODE based on ESRI example -showing different methods I have tried.

workspace = os.path.join(arcpy.env.workspace,fc)
print workspace
edit = arcpy.da.Editor(out_gdb) #set gdb as edit space since FC didn't work
edit.startEditing(False,True)
edit.startOperation()
#targetCursor = arcpy.da.InsertCursor(fc,"*") #use new insert format outside search
# Setup a search cursor on our new data and interate the rows
with arcpy.da.SearchCursor(os.path.join(gdbPath,shape),"*") as cursor:
    for row in cursor:
        print (row)
        #targetCursor.insertRow(row) #add row -works in gdb tables but not netork fc
        editfc=arcpy.da.InsertCursor(fc,['SHAPE@XY']) #as per https://desktop.arcgis.com/en/arcmap/10.3/analyze/arcpy-data-access/insertcursor-class.htm
        editfc.insertRow(row)
##        with arcpy.da.InsertCursor(fc, ('SHAPE@', 'Name')) as icur: # as https://pro.arcgis.com/en/pro-app/latest/arcpy/data-access/editor.htm
##            icur.insertRow(row)

# Stop the edit operation.
edit.stopOperation()

# Stop the edit session and save the changes
edit.stopEditing(True)

Based on https://community.esri.com/t5/python-questions/runtimeerror-cannot-open-workspace/m-p/383027#M30172 I see that I can edit the gdb and fc's in it but not those in the Network dataset.

---UPDATE

The ND is created using

arcpy.CreateFileGDB_management(out_folder,out_gdb)
arcpy.CreateFeatureDataset_management(os.path.join(out_folder,out_gdb),out_fd,sr)
arcpy.CreateTurnFeatureClass_na(os.path.join(out_folder,out_gdb,out_fd),"Turn_Restrictions","5")

The structure created is explained in https://pro.arcgis.com/en/pro-app/latest/help/analysis/networks/turns-in-the-network-dataset.htm

The process I have is to then create the network from a template and use a vector layer with the turns to manually copy-paste the records from it, into the ND Turn_Restrictions file.

print ("Creating Network - may show no activity for ~10mins")
print(datetime.now())
arcpy.CheckOutExtension("Network")
arcpy.CreateNetworkDatasetFromTemplate_na("D:/Projects/cstm.xml", os.path.join(out_folder,out_gdb,out_fd))
print ('Added Network Dataset and Template')
arcpy.BuildNetwork_na(in_network_dataset=os.path.join(out_folder,out_gdb,out_fd+"_ND"))
print(datetime.now())
print ('Built network -manually copy paste TR records into Turn_Restrictions and rebuild')
print(datetime.now())

Even if we use the ArcGIS Tutorial Data - https://desktop.arcgis.com/en/arcmap/latest/extensions/network-analyst/about-the-network-analyst-tutorial-exercises.htm

I still can't access the equivalent 'RestrictedTurns' using arcpy.

Answer 1

Use the arcpy.da.Editor to start and stop editing.
https://desktop.arcgis.com/en/arcmap/latest/analyze/arcpy-data-access/editor.htm

Code samples from esri:

import arcpy
import os

fc = 'Database Connections/Portland.sde/portland.jgp.schools'
workspace = os.path.dirname(fc)

# Start an edit session. Must provide the workspace.
edit = arcpy.da.Editor(workspace)

# Edit session is started without an undo/redo stack for versioned data
#  (for second argument, use False for unversioned data)
edit.startEditing(False, True)

# Start an edit operation
edit.startOperation()

# Insert a row into the table.
with arcpy.da.InsertCursor(fc, ('SHAPE@', 'Name')) as icur:
    icur.insertRow([(7642471.100, 686465.725), 'New School'])

# Stop the edit operation.
edit.stopOperation()

# Stop the edit session and save the changes
edit.stopEditing(True)

Sample 2:

import arcpy

fc = 'C:/Portland/Portland.gdb/Land/Parks'
workspace = 'C:/Portland/Portland.gdb'
layer_name = 'Parks'

try:
    arcpy.MakeFeatureLayer_management(fc, layer_name)
    arcpy.SelectLayerByAttribute_management(
        layer_name, 'NEW_SELECTION',
        """CUSTODIAN = 'City of Portland'""")
    with arcpy.da.Editor(workspace) as edit:
        arcpy.CalculateField_management(
            layer_name, 'Usage', '"PUBLIC"', 'PYTHON')

except arcpy.ExecuteError:
    print(arcpy.GetMessages(2))

Answer 2

I believe when making edits to network dataset participants through python, you must access the nax (network analyst python extensions) as opposed to the da. See this page for examples of loading using either the load method, or the InsertCursor.

I think the "load" option will better suit you so that you don't have to format the geometry as you extract it from an FC to insert into a NetFC.

EDIT:. It looks like PolyGeo had a problem similar to this years ago on edge and junction features.