Re: [igraph] Suggestion?

[Tamas Nepusz]

> For the get_shortest_paths function it would be convenient if the function
> returned an empty list if the path was not possible.  This would provide a
> simpler way of handling this situation than the runtime warning message.
> Suppressing this message seems complex to the new user of python.
The warning comes from the C layer:

https://github.com/igraph/igraph/blob/master/src/structural_properties.c#L740

The Python interface simply turns every warning coming from the C layer into
a proper Python warning and although I could make a special exception for this
warning in the Python layer, I'm a bit reluctant to do that -- others might
dislike some other warning coming from the C layer and then I would have to do
the same for those warnings as well :) Is there any particular reason why this
warning bothers you so much that you would like to silence it at all costs?

An alternative solution would be to add a Boolean flag to the Python module
that the user can use to disable the translation of warnings coming from the
C layer into Python warnings; you could then say something like
"igraph.warnings = False" from Python to turn these warnings off.

All the best,
T.