报错信息NameError: name ‘app’ is not defined

from flask import Flask
from flask_sqlalchemy import SQLAlchemy

class Application(Flask):
def init(self,import_name):
super(Application, self).init(import_name)
self.config.from_pyfile(‘config/base_setting.py’)

    db.init_app(self)

db = SQLAlchemy( app )
app = Application(name)

from application import app

def main():
app.run()

if name == ‘main’:
try:
import sys
sys.exit(main())

except Exception as e:
    import traceback
    traceback.print_exc()

运行后找不到app

已经找到原因了