text: from app import create_app, db
  from app.models import User,Post
  from flask_script import Manager,Server
  from  flask_migrate import Migrate, MigrateCommand
  
  
  # Creating app instance
  app = create_app('development')
  app = create_app('production')
  
  
  manager = Manager(app)
  manager.add_command('server',Server)
  
  migrate = Migrate(app,db)
  manager.add_command('db',MigrateCommand)
  
  
  @manager.shell
  def make_shell_context():
      return dict(app = app,db = db,User = User ,Post=Post)
  
  
  if __name__ == '__main__':
      manager.run()