On Tue, Mar 5, 2013 at 7:31 PM, Nicolas M. Thiery
<nicolas.thi...@u-psud.fr> wrote:
> Hi Robert, Volker and other fans of lazy import!
>
> Working on #4327 made me want to be able to lazy import a full
> module. That is have:
>
> lazy_import("sage.combinat.root_system.plot")
>
> be a lazy analogue of:
>
> import sage.combinat.root_system.plot
>
> Currently lazy_import complains that it wants two arguments. So I
> tried this:
>
> sage: lazy_import('sage.combinat.root_system', 'plot')
> sage: plot
> /opt/sage/sage : ligne 135 : 8765 Erreur de segmentation (core dumped)
> "$SAGE_ROOT/spkg/bin/sage" "$@"
> Process SAGE exited abnormally with code 139
>
> Oops!
>
> So two questions:
>
> - Is there an easy way to protect ourselves from this segfault?
Could you try running this with sage -gdb?
> - Would it be easy to allow for lazy importing modules?
> In the case at hand, I would like sage.combinat.root_system.plot to
> not be imported by default in Sage. Yet I would want:
>
> sage.combinat.root_system.plot?
>
> to give the documentation of this module (a detailed tutorial in this
> case).
I don't see any reason why this shouldn't be possible (in fact rather
easy) to support.
- Robert
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