2. flask数据库迁移 问题解决：usage: manage.py [-?] {db,shell,runserve

本节继续数据库迁移与文件拆分
在初步完成拆分后运行manage时遇到问题：
usage: manage.py [-?] {db,shell,runserver} …

usage: manage.py [-?] {db,shell,runserver} ...

positional arguments:
  {db,shell,runserver}
    db                  Perform database migrations
    shell               Runs a Python shell inside Flask application context.
    runserver           Runs the Flask development server i.e. app.run()

optional arguments:
  -?, --help            show this help message and exit

此时要通过pycharm运行代码，是需要从pycharm配置程序运行方式的：


然后完成，此时就可以正常从pycharm打开了