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These are the components of our Web Application:

• Application Type: Python-Web Application

• Web framework:

  • sync: Flask (Micro-Webframework)

  • async: FastAPI (Micro-Webframework)

• Neo4j Database Connector: Neo4j Python Driver for Cypher Docs

• Database: Neo4j-Server (4.4 or newer) with multi-database

• Frontend: jquery, bootstrap, d3.js

Provision a database quickly with Neo4j Sandbox or Neo4j Aura.

Install Python 3.7-3.11.

Then get yourself set up with virtualenv so we don’t break any other Python stuff you have on your machine. After you’ve got that installed let’s set up an environment for our app:

The next step is to install the dependencies for the app with pip (or pip3 for python3):

sync:

async:

And finally let’s start up a web server:

sync:

async:

Navigate to http://localhost:8080 and you should see your first Neo4j application

By default, this example application connects to a remote Neo4j database run by Neo4j for this purpose. If you want to connect to a local database, follow these instructions.

Start your local Neo4j Server (Download & Install), open the Neo4j Browser. Then install the Movies data set with :play movies, click the CREATE statement (in some versions, this will not be directly on the first page of the movies example), and hit the triangular "Run" button.

If you haven’t touched the configuration of your Neo4j Server, the database will be reachable at neo4j://localhost:7687.

Use environment variables to let the application know where to connect to the database.

sync:

async:

Here are all environment variables that can be used to configure the application.