How can I easily include route in flask?

Question

Flask

Good afternoon.
It is necessary to put the routes in a separate file in the flask project.
But there is no way to do it.
I made a simple example for clarity:

app.py

from flask import Flask
app = Flask(__name__)
import route
if __name__ == '__main__':
    app.run()

route.py

from app import app
@app.route('/')
def hello_world():
    return 'Hello World!'

Everything starts up fine:
python app.py
but when I go to the page:
127.0.0.1:5000
it says:
Not Found

And it seems that the task is simple, but I can’t solve it in any way.

Answer 1

Flask uses Blueprints for this. The code should look something like this:
app.py

from flask import Flask
from route import app_route

app = Flask(__name__)
app.register_blueprint(app_route)

if __name__ == '__main__':
    app.run(debug=True)

route.py

from flask import Blueprint

app_route = Blueprint('route', __name__)

@app_route.route('/')
def index():
  return 'Hello world!'

Answer 2

You have a cyclic import, in Python this is not possible. Read the documentation about code organization in Flask projects, it has everything you need.