From 0133ee946b5ddd6be4ead593b87e1ad4151461d9 Mon Sep 17 00:00:00 2001
From: angloth <angus.lothian@hotmail.com>
Date: Mon, 2 Mar 2020 11:22:00 +0100
Subject: [PATCH] Add missing Optional keyword to SFG.py

---
 b_asic/signal_flow_graph.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/b_asic/signal_flow_graph.py b/b_asic/signal_flow_graph.py
index 05e6ad66..9d31b04b 100644
--- a/b_asic/signal_flow_graph.py
+++ b/b_asic/signal_flow_graph.py
@@ -9,7 +9,7 @@ from b_asic.signal import Signal, SignalSource, SignalDestination
 from b_asic.simulation import SimulationState, OperationState
 from b_asic.graph_id import GraphIDGenerator, GraphID
 
-from typing import List, Dict, Union
+from typing import List, Dict, Union, Optional
 
 class SFG(BasicOperation):
 	"""
-- 
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