This is a api for leyouv samll WeChat in Python3 and Mongoengine as ORM and Flask as WebFramework
#public framework flask webframework mongoengin orm mongodb database
#util self framwork all config info which contains database info in service.py file and use gloabel function to be context in the api program
#user the small WeChat user model to relate the user collection
#trip the small Wechat trip model to relate the trip collection
#service.py descript and config the mongdb or context info
#app.py python3 app.py start the program