How do I know which properties an item has?

RandyMcGregor_BMcD

This is a VERY general question, but it would be very helpful to get this figured out. Sometimes, when I enter "item.properties" I get nice list of properties. And sometimes, I get nothing. 'check_item' below is a feature service view. I wanted to know which properties I have access to and the 'properties' attribute says 'None.'

print(check_item.properties)

None

There are many I know of: 'title' 'shared_with' 'snippet' etc... How does one acquire a list of the available properties of an item? jupyter does not seem to have autofill.

Thank you,

R

Clubdebambos

Hi @RandyMcGregor_BMcD 

The documentation states that Item objects have a base of a dictionary. 

 

from arcgis.gis import GIS

## access ArcGIS Online
agol = GIS("home")

## get the Feature Service as an Item object
item = agol.content.get("ITEM_ID") 

## print each property name
for p in item.keys():
    print(p)

 

Want to see the keys and values printed neatly...

from arcgis.gis import GIS
import json

## access ArcGIS Online
agol = GIS("home")

## get the Feature Service as an Item object
item = agol.content.get("ITEM_ID") 

## print property name : value
print(json.dumps(item, indent=4))

 

As mention by @DavidSolari, you can use dir(), this will return beyond the item dictionary properties and include the class properties and methods amongst others.

from arcgis.gis import GIS

## access ArcGIS Online
agol = GIS("home")

## get the Feature Service as an Item object
item = agol.content.get("ITEM_ID") 

## dir() will return the dictionary properties, class properties and methods, dunder methods and properties
print(dir(item))