topic Re: Update Field From Another Field in Hosted Feature Layer in Python Questions

Update Field From Another Field in Hosted Feature Layer

JaredPilbeam2 — Sat, 11 Dec 2021 06:41:57 GMT

This script successfully updates fields in a table based on other fields. I've been testing on a feature class in a FGDB, but my goal is to use this script on a hosted feature layer. For that I'd imagine working in a Jupyter notebook would be the way to go?

import arcpy, os

fc = r'\Test\Test.gdb\survey'
fields = ['Email_Category', 'whats_your_question_about',
         'tax_related_question', 'zoning_or_flood_zone_question']

with arcpy.da.UpdateCursor(fc, fields) as cursor:
    for row in cursor:
        if row[1] == 'tax_assessment':
            row[0] = 'tax assessment'
        if row[2] == 'tax_bill':
            row[0] = 'tax bill'
        if row[3] == 'flood_zone':
            row[0] = 'flood zone'
        cursor.updateRow(row)
print("Finished")‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I have Jupyter all set up and have created an item. But, if I put my script in verbatim I get this error.


---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
<ipython-input-24-6a7e13cce2ac> in <module>
----> 1 with arcpy.da.UpdateCursor(survey, fields) as cursor:
      2     for row in cursor:
      3         if row[1] == 'tax_assessment':
      4             row[0] = 'tax assessment'
      5         if row[2] == 'tax_bill':

RuntimeError: 'in_table' is not a table or a featureclass

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Update Field From Another Field in Hosted Feature Layer

JakeSkinner — Sat, 11 Dec 2021 06:41:59 GMT

Hey Jared,

If you're running the UpdateCursor on a hosted feature service, you will want to specify the URL to the feature service (i.e. https://portal.esri.com/arcgis/rest/services/Airports/FeatureServer/0).

Also, unless the service is shared with Everyone, whether the service is hosted in AGOL or Portal, you will need to generate a token. Below is an example on how to generate one for each.

import arcpy, requests, json
# Disable warnings
requests.packages.urllib3.disable_warnings()


# Generate token for hosted service in AGOL
username = 'admin'
password = 'gis12345'

tokenURL = 'https://www.arcgis.com/sharing/rest/generateToken'
params = {'f': 'pjson', 'username': username, 'password': password, 'referer': 'http://www.arcgis.com'}

r = requests.post(tokenURL, data = params, verify=False)
response = json.loads(r.content)
token = response['token']


# Generate token for hosted sevice in Portal
username = 'portaladmin'
password = 'gis12345'

tokenURL = 'https://portal.esri.com:7443/arcgis/sharing/rest/generateToken/'
params = {'f': 'pjson', 'username': username, 'password': password, 'referer': 'https://portal.esri.com'}

r = requests.post(tokenURL, data = params, verify=False)
response = json.loads(r.content)
token = response['token']


# Search cursor for feature service
fc = "https://portal.esri.com/arcgis/rest/services/Hosted/Airports/FeatureServer/0?token={0}".format(token)

with arcpy.da.SearchCursor(fc, ["*"]) as cursor:
     for row in cursor:
         print(row[0])
del cursor

with arcpy.da.SearchCursor(fc, ["*"]) as cursor:
     for row in cursor:
         print(row[0])
del cursor‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Update Field From Another Field in Hosted Feature Layer

JaredPilbeam2 — Wed, 18 Mar 2020 20:55:13 GMT

Hi Jake,

The service is shared with everyone. I put your cursor snippet in a cell and ran it. It printed all the features. So, then i put my code in and got the following error. After reading it I went to the Settings page of the Feature and made sure Add, Update, and Delete Features button was checked. Then I ran the same cell, but it threw the same error.

Re: Update Field From Another Field in Hosted Feature Layer

JakeSkinner — Sat, 11 Dec 2021 06:42:02 GMT

I ran the following successfully:

import arcpy, requests, json

# Disable warnings
requests.packages.urllib3.disable_warnings()

# Search cursor for feature service
fc = "https://services.arcgis.com/fGsbyIOAuxHnF97m/ArcGIS/rest/services/service_0a8c947fd081446eb3a31ef7ca0b966a/FeatureServer/0"

fields = ['Email_Category', 'whats_your_question_about',
         'tax_related_question', 'zoning_or_flood_zone_question']

with arcpy.da.UpdateCursor(fc, fields) as cursor:
     for row in cursor:
         if row[1] == 'tax_assessment':
            row[0] = 'tax assessment'
         elif row[2] == 'tax_bill':
            row[0] = 'tax bill'
         elif row[3] == 'flood_zone':
            row[0] = 'flood zone'
         cursor.updateRow(row)
del cursor‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

I cannot see from your screen shot, but I'm guessing it may be the Feature Service URL. Did you append the /0 at the end?

Re: Update Field From Another Field in Hosted Feature Layer

JaredPilbeam2 — Wed, 18 Mar 2020 21:12:57 GMT

Here's how I have the url.

fc = "https://services.arcgis.com/fGsbyIOAuxHnF97m/arcgis/rest/services/service_0a8c947fd081446eb3a31ef7ca0b966a/FeatureServer/0"‍‍

I didn't append /0 because I understood that to be the token if the feature wasn't shared.

Re: Update Field From Another Field in Hosted Feature Layer

JaredPilbeam2 — Wed, 18 Mar 2020 21:22:14 GMT

Brilliant. My last notebook was pretty messy, so I started a whole new one. It worked great! Now I have to find a way to run this script from Jupyter via Task Scheduler.

Re: Update Field From Another Field in Hosted Feature Layer

JakeSkinner — Wed, 18 Mar 2020 21:31:06 GMT

Just an FYI, I usually prefer PyScripter. That will will create a .py file automatically. Take a look at the following document on how to configure PyScripter with Python 3.x:

Run PyScripter with ArcGIS Pro's Python 3.x and the ArcGIS API for Python

I find PyScripter is a littler easier to debug code. Also, take a look at the following to run a python scheduled task:

Scheduling a Python script or model to run at a prescribed time

For the python executable, that will be located at:

"C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\python.exe"

Re: Update Field From Another Field in Hosted Feature Layer

JakeSkinner — Fri, 20 Mar 2020 16:33:38 GMT

One other thing I just learned is you can schedule scripts/tools directly from ArcGIS Pro 2.5:

Schedule geoprocessing tools—ArcGIS Pro | Documentation