CORS on Flask

The following approach uses the

Flask-CORS

Install the package:

$ pip install -U flask-cors

Add it to your Flask app:

# app.py
from flask import Flask
from flask_cors import CORS
app = Flask(__name__)
cors = CORS(app)

Test by running the development server as usual:

$ FLASK_APP=app.py flask run

For full details read the Flask-CORS package documentation.