I could never imagine that this will be true. But yes you can do the coding or programming in Hindi or any Language of the world. I came across this article in Open Source Magazine article in Aug-15 issue. What you need to provide is mapping of language keywords in regional programming language. Good news is mapping is already provided for Hindi Programming in Python language.
To do this you need to install pyTongue add-on from github. Pre-requisite is that you should have python3 already installed on your system. As these are open source packages, they are available for free download and use.
Internally there is translator of python code which relies on google-translate-python API to convert hindi script to english.