X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fbindings%2Fpython%2Fbt2%2Fbt2%2Fgraph.py;h=ef40014ba9262e58e678193e2b9355c59a92de27;hb=3e03e5e334d6a995f4fc63f52b6d6745688f640f;hp=82708025c19032b91c72b063d977567b95ca4995;hpb=5265f5e396ea0da7012e095c5ad89076536859fe;p=babeltrace.git

diff --git a/src/bindings/python/bt2/bt2/graph.py b/src/bindings/python/bt2/bt2/graph.py
index 82708025..ef40014b 100644
--- a/src/bindings/python/bt2/bt2/graph.py
+++ b/src/bindings/python/bt2/bt2/graph.py
@@ -129,7 +129,11 @@ class Graph(object._SharedObject):
         if obj is not None and not native_bt.bt2_is_python_component_class(base_cc_ptr):
             raise ValueError('cannot pass a Python object to a non-Python component')
 
+        if params is not None and not isinstance(params, (dict, bt2.MapValue)):
+            raise TypeError("'params' parameter is not a 'dict' or a 'bt2.MapValue'.")
+
         params = bt2.create_value(params)
+
         params_ptr = params._ptr if params is not None else None
 
         status, comp_ptr = add_fn(