[bindings python] make constructor failure raise a lasso.Error exception

bindings/python/lang.py

@@ -335,7 +335,7 @@ if WSF_SUPPORT:
                 print >> fd, '        self._cptr = _lasso.%s(%s)' % (
                         m.name[6:], c_args)
                 print >> fd, '        if self._cptr is None:'
-                print >> fd, '            raise Exception(\'failed to create object\')'
+                print >> fd, '            raise Error(\'failed to create object\')'
                 print >> fd, ''
 
         for m in self.binding_data.functions: