* TODO: updated

* python/Makefile.am python/generator.py python/libvir.c
  python/libvir.py: improved python binding, raise exception
  when an instance creation or lookup fails, and add support
  for the global error handler, per conn handler still needed
* python/tests/error.py python/tests/Makefile.am: adding a
  regression test
Daniel

python/tests/error.py

@@ -0,0 +1,41 @@
+#!/usr/bin/python -u
+#
+# Tests global error handlers at the python level.
+#
+import libvirt
+import sys
+import os
+
+errno = None
+
+def handler(ctxt, err):
+    global errno
+
+    #print "handler(%s, %s)" % (ctxt, err)
+    errno = err
+
+libvirt.registerErrorHandler(handler, 'context')
+
+conn = libvirt.openReadOnly(None)
+if conn == None:
+    print 'Failed to open connection to the hypervisor'
+    sys.exit(1)
+
+try:
+    dom0 = conn.lookupByName("Does_not_exist")
+    print 'strange found a Does_not_exist domain'
+    sys.exit(1)
+except:
+    pass
+
+del conn
+
+if errno == None:
+    print 'failed to get an error'
+elif errno[0] == libvirt.VIR_ERR_NO_CONNECT or \
+     errno[0] == libvirt.VIR_ERR_INVALID_DOMAIN:
+    print "OK"
+else:
+    print 'got unexpected error %s' % (errno)
+
+sys.exit(0)