How to check if image = entity[image_prop] is available or not?

[sumit-158]

Description

How to check "P18" exist in claims or not?
@dahlia

[dahlia]

As Entity implements Mapping protocol, you can treat it as a kind of dictionary. Just use in operator:

>>> from wikidata.client import Client
>>> client = Client()
>>> entity = client.get('Q20145')
>>> image_prop = client.get('P18')
>>> image_prop in entity
True