[Libvir] Python bindings, errors & exceptions

[Daniel P. Berrange]

On Fri, Mar 23, 2007 at 01:02:37PM +0000, Richard W.M. Jones wrote:
> Daniel P. Berrange wrote:
> >On Fri, Mar 23, 2007 at 12:12:56PM +0000, Richard W.M. Jones wrote:
> [...]
> >>  class virConnect:			# libvirtclass.py
> >>    # ...
> >>    def listNetworks(self):
> [...]
> >>
> >>  static PyObject *			// libvir.c
> >>  libvirt_virConnectListNetworks(PyObject *self ATTRIBUTE_UNUSED,
> >>			       PyObject *args) {
> [...]
> >Yes, returning None here is totally bogus - it should be raising a
> >libvirtError object.
> 
> Which code is wrong here?  From looking at this it was my impression 
> that listNetworks is autogenerated by generator.py, and all the code in 
> libvir.c is hand-written, but you say:
> 
> >Indeed they should - all the generated C code bindings do - its just a few
> >of these hand written bindings that are wrong.

Actually looks like it is the generated code actually. The generator.py
appears to only add in the 'raise libvirtError' stuff if the return value
is a virConnectPtr/virDomainPtr/virNeworkPtr  object - any other function
with a non-object return value gives back None upon error. 

Dan.
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