[IPOL discuss] various questions about python demos

[Juan Cardelino]

>
> No problem, I have a /tmp/bar file. Hmm... what was your problem? What
> did not work? What was the python answer?
>

Actually I couldn't know sometimes the ./demo.py build call will die
silently. For the execution errors I always get some (obscure) error
messages, but undertstandable with some time. In the case of errors in
the build stage I usually get nothing. But I'm sure this is my lack of
expertise.

> PS: however, the cwd parameter is better than "cd foo; do_stuff"
>

Thanks for the clarification.