首先在启动Flask项目时，我们可以传不同的参数作为运行参数。但是我们只能在入口app.run()传参。这样十分的不方便。Flask-Script 是一个 Flask 扩展，为 Flask 程序添加了一个命令行解析器。 Flask-Script 自带了一组常用选项，而且还支持自定义命令。

　　自定义创建命令的方法有三种：

from flask import Flaskfrom flask_script import Managerfrom flask_script import Commandapp = Flask(__name__)manager = Manager(app)class Hello(Command):    'hello world'    def run(self):        print('hello world！')#绑定到Hello函数manager.add_command('hel', Hello())if __name__ == '__main__':    manager.run()

　　执行

(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py helhello world！

　　第二种方法

from flask import Flaskfrom flask_script import Managerfrom flask_script import Commandapp = Flask(__name__)manager = Manager(app)#绑定到Hello函数@manager.commanddef hi():    print('hello world！')if __name__ == '__main__':    manager.run()

　　运行

(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py hihello world！

　　当参数多个时，使用第三种方式

from flask import Flaskfrom flask_script import Managerapp = Flask(__name__)manager = Manager(app)@manager.option('-n', '--name', dest='name', help='Your name', default='world')def hi(name):    'hello world or hello 
     
      '    print('hello', name)if __name__ == '__main__':    manager.run()
     

　　运行结果：

(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py hihello world(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py hi -n jeffhello jeff(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py hi --name jeffhello jeff(flask_blog) jeff@debian:~/PycharmProjects/flask_blog$ python script_test.py hi --name jeff1hello jeff1