swag-shop/app/__init__.py

from flask import Flask
from flask_jwt_extended import JWTManager

app = Flask(__name__)
jwt_manager = JWTManager(app)

def create_app():
	from app.api import bp, bp_errors, bp_product, bp_user
	app.register_blueprint(bp)
	app.register_blueprint(bp_errors)
	app.register_blueprint(bp_product)
	app.register_blueprint(bp_user)

	from app.config import FlaskTesting, FlaskProduction
	app.config.from_object(FlaskTesting)

	return app