text: from app import create_app, db
  from flask_script import Manager,Server
  from flask_migrate import Migrate, MigrateCommand
  from app.models import User, Blog
  
  # instances for the create_app
  # app = create_app('test')
  # 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, Blog = Blog)
  
  @manager.command
  def test():
      '''
      Run the unit test
      '''
      import unittest
      tests = unittest.TestLoader().discover('tests')
      unittest.TextTestRunner(verbosity=2).run(tests)
  
  if __name__=='__main__':
      manager.run()