A Pythonic Way to Measure and Improve Your Programming Skills?

André andre.roberge at gmail.com
Sat Mar 10 19:24:10 CET 2007

On Mar 10, 1:54 pm, Brad Allen <b... at allendev.com> wrote:
> At 9:10 AM -0800 3/10/07, Michael Bernstein wrote:
> >On Sat, 2007-03-10 at 10:01 -0600, Brad Allen wrote:
> >>  When I discussed this problem with Michael Bernstein at PyCon he suggested
> >>  the idea of creating a "chroot jail" for each web session which could run
> >>  the Python interpreter in a secure sandbox. That might be easier than giving
> >>  each session a whole virtual server.
> >Note that this wasn't an original idea of mine, I got it from brief
> >mentions associated with two existing interactive python-in-a-web-page
> >implementations:
> >         Try Python:http://www.mired.org/home/mwm/try_python/
> >         TryPy:http://trac.pocoo.org/wiki/TryPy
> Cool! The first link appears to work with Firefox and provides a real example
> of using a Python interactive prompt via a non-local web interface.
> Interestingly, it doesn't seem to use Crunchy, but instead uses TryPy.

try_python was one of the things that inspired me to write Crunchy.

> Apparently you can't define classes or functions with TryPy, but I recall you
> can using Crunchy. This is important for creating tutorials in which you
> ask the student to define a class or function to solve a problem.

Yes, Crunchy gives you full access to a regular Python interpreter.
In a classroom environment, you can even write some doctests that have
to be satisfied by the student's code.  One example included in the
documentation requires the user to define a class to solve a
particular problem.

I think that it would be great indeed if Crunchy could be made
available from the web in a secure way.  Hopefully, by the time we
make the 1.0 release, Crunchy will have been found to be useful enough
that someone with the appropriate resources will make this happen.


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