Model classes - field properties and options

Model class properties named reality:

1) You can not use the reserved keywords python.

2) does not allow the use of a continuous underscore, this is django ways to search decisions.

3) the definition of attribute fields specify the type, field types specified by the option parameter syntax is as follows:

　　Property name = models. Field type (option)

Field Type:

Use a package need to reference django.db.models

Reference documents: https://www.cnblogs.com/linxiyue/p/3662887.html

　　　　　　http://www.imooc.com/article/37933

　　　　　　https://my.oschina.net/liuyuantao/blog/751343