Fix a bug where an Attribute used as a base class was triggering a crash

Close #626

2 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index ee1da255..27dc332d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,10 @@ What's New in astroid 2.2.0?
 ============================
 Release Date: TBA
 
+* Fix a bug where an Attribute used as a base class was triggering a crash
+
+  Close #626
+
 * Added special support for `enum.IntFlag`
 
   Close PyCQA/pylint#2534
diff --git a/astroid/bases.py b/astroid/bases.py
index 318ddb5d..8fbbebf2 100644
--- a/astroid/bases.py
+++ b/astroid/bases.py
@@ -82,6 +82,8 @@ def _is_property(meth):
             continue
         if inferred.__class__.__name__ == "ClassDef":
             for base_class in inferred.bases:
+                if base_class.__class__.__name__ != "Name":
+                    continue
                 module, _ = base_class.lookup(base_class.name)
                 if module.name == BUILTINS and base_class.name == "property":
                     return True