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DataJoy is also similar to http://sagecell.sagemath.org/ http://sagecell.sagemath.org/, which requires no sign in and lets you run Python (and much more) direct
by williamstein 10y ago
DataJoy is also similar to http://sagecell.sagemath.org/ http://sagecell.sagemath.org/, which requires no sign in and lets you run Python (and much more) directly from a website, is pretty battle tested at this point, and is entirely free to use and open source. Disclaimer: I pay for some hosting of SageCell.