python - pickle faster than cPickle with numeric data? - Stack Overflow
python序列化: json & pickle & shelve 模块- 百衲本- 博客园
Python Shelve: Storing, Retrieving, Updating, and Deleting Data
python - I set db_ID_1 to '0' with shelve module like pickle module.. i print db_ID_1 and it = 0 but when I do... IF db_ID_1 != '0': .. it think it isn't 0 - Stack Overflow