flask cors policy no 'access-control-allow-origin'

To resolve the "flask cors policy no 'access-control-allow-origin'" issue, follow these steps:

  1. Install the Flask-CORS extension using pip:
pip install flask-cors
  1. Import the CORS module in your Flask application:
from flask_cors import CORS
  1. Initialize CORS with your Flask app:
  1. Optionally, configure CORS to allow specific origins:
CORS(app, resources={r"/api/*": {"origins": "http://example.com"}})
  1. Restart your Flask application and test the CORS policy.