NameError: name 'app' is not defined with Flask

Question

I have the following structure in my project ``` \ myapp \ app __init__.py views.py run.py ``` And the following code: run.py ``` from app import create_app if __name__ == '__main__': app = create_app() app.run(debug=True, host='0.0.0.0', port=5001) ``` views.py ``` @app.route("/") def index(): return "Hello World!" ``` _init_.py ``` from flask import Flask def create_app(): app = Flask(__name__) from app import views return app ``` I'm trying to use the `factory design pattern` to create my `app` objects with different `config` files each time, and with a subdomain dispatcher be able to create and route different objects depending on the `subdomain` on the user request. I'm following the Flask documentation where they talk about, all of this: - Application Context - Applitation Factories - Application with Blueprints - Application Dispatching But I couldn't make it work, it seems that with my actual project `structure` there are no way to pass throw the `app` object to my `views.py`…

Accepted Answer

After do what Miguel suggest (use the `Blueprint`) everything works, that's the final code, working:

_init.py_

```
...

def create_app(cfg=None):
    app = Flask(__name__)
    from api.views import api
    app.register_blueprint(api)
    return app
```

views.py

```
from flask import current_app, Blueprint, jsonify
api = Blueprint('api', __name__)

@api.route("/")
def index():
     # We can use "current_app" to have access to our "app" object
     return "Hello World!"
```

NameError: name 'app' is not defined with Flask

Solution

Problem