text: from app import create_app,db
  from flask_script import Manager,Server
  from app.models import User, Role
  from flask_migrate import Migrate, MigrateCommand
  
  
  #creating an app instance  
  app = create_app('development')
  app = create_app("test")
  
  manager = Manager(app)
  migrate = Migrate(app, db)
  
  manager.add_command('db', MigrateCommand)
  manager.add_command('server', Server)
  
  @manager.command
  def test():
      """
      Run the unit tests.
      """
      import unittest
      tests = unittest.TestLoader().discover('tests')
      unittest.TextTestRunner(verbosity=2).run(tests)
  
  @manager.shell
  def make_shell_context():
      return dict(app = app,db = db,User = User, Role = Role) 
  
  
  if __name__ == "__main__" :
      manager.run()