[Libvir] Include actual error info in python exceptions

[Daniel Veillard]

On Wed, Oct 25, 2006 at 07:25:23PM +0100, Daniel P. Berrange wrote:
> The current python bindings throw a generic libvirtError exception object
> whose message merely consists of the name of the method which failed. This
> isn't really all that useful to the caller, since they know exactly which
> method failed - its the one they just called! The attached patch adds a
> binding for virConGetLastError & virGetLastError & pulls this info into
> the libvirtError object being thrown.

  Right, that's a nice improvement. I wonder why I didn't add the 
bindings for the error function since the exception class was defined.
Maybe I stopped in the middle :-\

  thanks !

Daniel

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