Address #108 (comment).

com.ibm.wala.cast.python/source/com/ibm/wala/cast/python/ipa/callgraph/PythonSSAPropagationCallGraphBuilder.java

@@ -222,7 +222,7 @@ protected void processCallingConstraints(
           // If we are looking at the implicit parameter of a callable.
           if (call.getCallSite().isDispatch() && i == 0 && isCallable(rval)) {
             // Ensure that lval's variable refers to the callable method instead of callable object.
-            IClass callable = getCallable(target);
+            IClass callable = target.getMethod().getDeclaringClass();
             IntSet instanceKeysForCallable = this.getSystem().getInstanceKeysForClass(callable);
 
             for (IntIterator it = instanceKeysForCallable.intIterator(); it.hasNext(); ) {
@@ -292,18 +292,6 @@ protected void processCallingConstraints(
     }
   }
 
-  private IClass getCallable(CGNode target) {
-    IMethod method = target.getMethod();
-    IClass declaringClass = method.getDeclaringClass();
-    TypeName declaringClassName = declaringClass.getName();
-
-    TypeReference typeReference =
-        TypeReference.findOrCreate(
-            declaringClass.getClassLoader().getReference(), declaringClassName);
-
-    return this.getClassHierarchy().lookupClass(typeReference);
-  }
-
   protected boolean isCallable(PointerKey rval) {
     PointerAnalysis<InstanceKey> pointerAnalysis = this.getPointerAnalysis();
     OrdinalSet<InstanceKey> pointsToSet = pointerAnalysis.getPointsToSet(rval);