Django.2.Tips.2017-08-10

assert & log
http://www.cnblogs.com/ajianbeyourself/p/3813257.html

Django model manager
http://blog.csdn.net/sundaydashu/article/details/7959977

Django import(name, fromlist=([],))
https://stackoverflow.com/questions/2724260/why-does-pythons-import-require-fromlist

Django 使用Max(list)提示如下，原因是list中存在None，需要处理

遍历dict
http://www.jb51.net/article/50507.htm

bootstrap 动态限定起止时间
http://blog.csdn.net/wzj2584454/article/details/67636241