Flask app getting error of “could not locate flask application. …FLASK_APP environment variable” for Flask Migrate

Question

I have a file db_table.py that looks like:

from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_migrate import Migrate

ap         


        

Answer 1

Some problem will can happen if you use DispatcherMiddleware (werkzeug.wsgi). Change return object from app_dispatch to app without app_dispatch for migrate time.

This is a rare case, I hope someone helps...