Copyright =========== The HITRAN Application Programming Interface (HAPI) is a set of routines in Python which aims to provide remote access to functionality and data given by the [HITRANonline]_ . Currently, the HITRANonline provides the hapi.py v1.0.0 for the users. While the script is written in Python2 and related library. Python is a great language for scientific computation, and Python3.x have more features for us to use. We are currently working on porting the hapi to Python 3 and related library. One can refer to the article [why-you-should-move-to-python-3-now]_ for further reading. .. [HITRANonline] http://hitran.org/hapi/ .. [why-you-should-move-to-python-3-now] (http://cyrille.rossant.net/why-you-should-move-to-python-3-now/)