graphene/examples/flask_sqlalchemy/app.py

from flask import Flask
from database import db_session, init_db

from schema import schema
from graphql_flask import GraphQL

app = Flask(__name__)
app.debug = True

default_query = '''
{
  allEmployees {
    edges {
      node {
        id
        name
        department {
          name
        }
      }
    }
  }
}'''.strip()

GraphQL(app, schema=schema, default_query=default_query)


@app.teardown_appcontext
def shutdown_session(exception=None):
    db_session.remove()

if __name__ == '__main__':
    init_db()
    app.run()