5

I started building an application based on Flask. The idea is to play a little with REST API, without any HTML etc., just simple JSON responses.

Everything seems to work if I have everything in one file.

 tasks = [  # pylint: disable=C0103
    {
        'id': 1,
        'title': 'First',
        'content': u'First task'
    },
    {
        'id': 2,
        'title': 'Second',
        'content': u'Second task'
    }
]
app = Flask(__name__)   

@app.route('/api/v1.0/tasks/', methods=['GET'])
def get_tasks():
    """
    [GET] Retrieves all tasks
    """
    return jsonify({'tasks': tasks})

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

This works perfectly when I run my flask app. The problem is starting when I want to move it to other file. I just moved get_tasks method to /my_app/views.py and declaration app = Flask(name) into my_app/init.py. Of course I added import in my main app.py file. Server starts normally, but I am not able to get result. When I move back the method to app.py, it works. What am I missing here?

EDIT

app.py

from my_app import app

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0')

views.py

from flask import jsonify
from my_app import app
@app.route('/api/v1.0/tasks/', methods=['GET'])
def get_tasks():
    """
    [GET] Retrieves all tasks
    """
    tasks = [  # pylint: disable=C0103
        {
            'id': 1,
            'title': 'First',
            'content': u'First task'
        },
        {
            'id': 2,
            'title': 'Second',
            'content': u'Second task'
        }
    ]
    return jsonify({'tasks': tasks})

dir structure:

project_name/
--- my_app/
----- __init__.py
----- views.py
--- app.py

EDIT 2 As I mentioned in comment, I moved everything from init.py into app.py file, and it still don't work, but when I've added in app.py one extra import, after app = Flask(name), it works. Import is 

from my_app import views

When I am trying to add this import before, I have circular import

Tatarinho
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  • can you show us the code for the new app.py, and the directory structure, what you are saying should work, also if __name__ == '__main__': if __name__ == '__main__': should only be one if __name__ I assume thats a copy paste error – E.Serra Sep 06 '18 at 14:41
  • I edited my post – Tatarinho Sep 06 '18 at 14:52
  • don't know why someone downvoted, looks like a legit question. Anyway, I wouldn't put anythin in the __init__.py file, change app.py to contain: from flask import Flask app = Flask(__name__) if __name__ == '__main__': app.run(debug=True) and let's see what happens next (I would also change the import) – E.Serra Sep 06 '18 at 15:49
  • I moved everything from __init__.py as you suggested to my app.py, and it still don't work, however when I added "from my_app import views" in app.py after creation of app object, it works...of course I can't add this import before, cause I have circular import...how to solve it? – Tatarinho Sep 06 '18 at 17:36
  • Wait, this is still unanswered? – oxioxi Dec 01 '20 at 07:08
  • https://stackoverflow.com/questions/15231359/split-python-flask-app-into-multiple-files This fixed it for me. – Siriss Jun 01 '22 at 17:43

0 Answers0