命令行操作flask

　　Flask-Script

　　先安装pip3 install Flask-Script

from sansa import create_app
from flask_script import Manager

app = create_app()
manager = Manager(app)

if __name__ == '__main__':
    manager.run()  #命令行执行python manage.py runserver运行

 　　自定义命令

# -*- coding:utf-8 -*-
#! /usr/bin/env python
# __author__ = 'seven'

from sansa import create_app
from flask_script import Manager

app = create_app()
manager = Manager(app)

@manager.command
def custom(arg):
    '''
    自定义命令
    python manage.py custom 123
    :param arg:
    :return:
    '''
    print(arg)

@manager.command
def create_all():
    '''
    python manage.py create_all
    :return:
    '''
    print('create_all')
    # from sansa import create_app
    # from sansa import db
    #
    # app = create_app()
    #
    # with app.app_context():
    #     db.create_all()

@manager.option('-n', '--name', dest='name')
@manager.option('-u', '--url', dest='url')
def cmd(name, url):
    '''
    自定义命令
    python manage.py cmd -n laoliu -u www.baidu.com
    python manage.py cmd --name laoliu --url www.baidu.com
    :param name:
    :param url:
    :return:
    '''
    print(name, url)


if __name__ == '__main__':
    manager.run()  #命令行执行python manage.py runserver运行

　　Flask-Migrate

　　先安装pip3 install Flask-Migrate

　　SQLAlchemy中本身不支持在运行过程中修改列，如果要修改，需要把表删了，重建，如果要实现和django里类似于makemigrations，migrate等效果，就可以用这个第三方插件了