How to access Google Datastore API with credentials without using environment variables?

Question

Currently I'm getting access to the API though the GOOGLE_APPLICATION_CREDENTIALS environment variable. I created and downloaded a service account key as a .json file and set the environment variable to that file. Due to the requirements of the project I'm working on, I won't be able to do this. I tried using the credentials variable in the constructor for the datastore client object, but I wasn't able to get that to work. How should I be going about this?

I'm running Windows 10, but any solution should be (relatively) OS agnostic. I'm writing in python 3.6.

user_12950305 · Answer

You can use from_service_account_json():

from google.cloud import datastore

client = datastore.Client.from_service_account_json('/path/to/credentials.json')
var = client.get(client.key('MyKind', ''))
print(var)

see: https://cloud.google.com/docs/authentication/production#obtaining_and_providing_service_account_credentials_manually

How to access Google Datastore API with credentials without using environment variables?

1 Answers