The following Repl is keeping compiling the same code forever: https://repl.it/@degalli/LabTNDS
We've pushed some fixes for looping repls. If your repl is still acting oddly, please open a new issue and provide a link, and we'll take a look!
@mtomasi, sorry about that. I'm not able to reach that repl - is it working now? We've pushed some fixes for python and graphics repls.