You did not define what that project would be. I suppose you should first figure out the domain, then figure out the language support and ecosystem around that

You did not define what that project would be. I suppose you should first figure out the domain, then figure out the language support and ecosystem around that domain and then pick one. That is, if you are implementing something practical whose aim is to provide value outside of personal learning. For example, several constraints still lead to a situation where C++ is a prime choice unless one is mostly interestes in hacking in a new domain and not finishing a project. Note! I'm not dissing trying out languages for the joy of it! Personally, I would pick Python for experimenting with syntax transforms, data mining and such. And as a basis for any offline tool that needs to chug bits from one place to another. Also, the numerical use cases listed elsewhere. Basically, for anything that does not need a GUI.