Skip subject if already added.

kmels · Jul 28, 2015 · fc27030 · fc27030
1 parent bc8aa0c
commit fc27030
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pyalgotrade/dispatcher.py b/pyalgotrade/dispatcher.py
@@ -48,7 +48,10 @@ def getSubjects(self):
         return self.__subjects
 
     def addSubject(self, subject):
-        assert(subject not in self.__subjects)
+        # Skip the subject if it was already added.
+        if subject in self.__subjects:
+            return
+
         if subject.getDispatchPriority() is None:
             self.__subjects.append(subject)
         else: