Index: src/org/python/core/PyObject.java
===================================================================
--- src/org/python/core/PyObject.java	(revision 3440)
+++ src/org/python/core/PyObject.java	(working copy)

@@ -1685,7 +1688,10 @@
      * @return the result of the search.
      **/
     public final PyObject _in(PyObject o) {
-        return Py.newBoolean(o.__contains__(this));
+	 if(o instanceof PyDictionary )
+	     return Py.newBoolean(((PyDictionary)o).has_key(this));
+	 else	
+	     return Py.newBoolean(o.__contains__(this));
     }
 
     /**
@@ -1695,7 +1701,10 @@
      * @return the result of the search.
      **/
     public final PyObject _notin(PyObject o) {
-        return Py.newBoolean(!o.__contains__(this));
+	 if(o instanceof PyDictionary )
+	     return Py.newBoolean(!(((PyDictionary)o).has_key(this)));
+	 else
+	     return Py.newBoolean(!o.__contains__(this));
     }
 
     /**