Python 报错 AttributeError: module 'django.db.models' has no attribute 'SubfieldBase'

AttributeError: module 'django.db.models' has no attribute 'SubfieldBase'

 

http://www.guanggua.com/question/35166085-How-to-deal-with-SubfieldBase-has-been-deprecated-Use-Fieldfrom_db_value-instead.html

It's very detailed, I'll sort it out later