[bpyne]

Python is an excellent teaching language. It's simple to install. You follow a tutorial by typing something at the REPL and it gives you results. Learning stuff like importing modules, etc. happens as your coding ambitions increase.

Something else to consider is the Python shell at python.org/shell. Students often have Chromebooks. I'm about to mentor second year high school students who are interested in CS. Several of them have Chromebooks only. I can recommend Python and point them to the shell.

I would think Python got a good bump through Hour of Code and other programs to introduce people to coding.