可以對twitter搜尋tweet做關鍵字搜尋的代碼-performs a basic keyword search for tweets containing the keywords

some functions of R in python

气象干旱指标计算程序，已经集成为arcgis工具箱，导入后即可使用 也可在py环境下直接运行(The meteorological drought indicator calculation program has been integrated into the arcgis toolbox and can be used after import. Can also run directly in py environment)