Verifying driver connectivity issue - Python Jupyter notebook

General
1

Hi,

I'm going through the Building Neo4j Applications with Python course on GraphAcademy and am encountering a problem when trying to connect and verify the driver instance:

# Create a new Driver instance
driver = GraphDatabase.driver("neo4j://localhost:7687",
    auth=("neo4j", "runaway-trades-presence"))

When I then try the command to verify the connection details like so:

# Verify the connection details
driver.verify_connectivity()

It returns the following error:

/var/folders/d7/q_fznsr95_97r6lp_mx_vp640000gn/T/ipykernel_98786/954338410.py:2: ExperimentalWarning: The configuration may change in the future.
  driver.verify_connectivity()
...
ServiceUnavailable: Could not connect to any routing servers.

The .env file has been updated with the correct credentials - any ideas why this is happening?

I'm also not able to print or view any of the following in Python - neo4j_uri, neo4j_username etc.

neo4j_uri = os.getenv('NEO4J_URI')
neo4j_username = os.getenv('NEO4J_USERNAME')
neo4j_password = os.getenv('NEO4J_PASSWORD')
2

Thanks @elaine_rosenber ,

The sandbox is still valid for 9 days (after extending). However, I'm still not getting it to work. I've also tried using the session = driver.session("WRITE") operation on a different task (unrelated to the GraphAcademy course) which was returning the following error:

TypeError: session() takes 1 positional argument but 2 were given

I'm not sure if there is a compatibility issue with my version of Neo4j or Python (3.9).

3

Hello @stephflint ,

In the sandbox setup lesson, you should have set the environment variables to those for the sandbox, which is a URI that contains sandbox.com.

Note that by default, a sandbox exists for 3 days, but can be extended to 10. If the sandbox originally created for the course expires, GraphAcademy will create a new one for you and the credentials will have changed so be wary of that. You can always check the credentials of your Recommendations sandbox at the sandbox.neo4j.com site.

Elaine