From 56ca221f8c9e1dbbd33ef673d102927ea7d5fe3f Mon Sep 17 00:00:00 2001
From: Eric Hunsberger <eric.hunsberger@appliedbrainresearch.com>
Date: Wed, 2 Dec 2020 10:16:32 -0500
Subject: [PATCH] Get Mapping from collections.abc

---
 nengo_dl/signals.py   | 3 ++-
 nengo_dl/simulator.py | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/nengo_dl/signals.py b/nengo_dl/signals.py
index c3bf15e38..cfbbcc52a 100644
--- a/nengo_dl/signals.py
+++ b/nengo_dl/signals.py
@@ -3,7 +3,8 @@
 """
 
 import logging
-from collections import Mapping, defaultdict
+from collections import defaultdict
+from collections.abc import Mapping
 
 import numpy as np
 import tensorflow as tf
diff --git a/nengo_dl/simulator.py b/nengo_dl/simulator.py
index 9681a8085..b65c25ddc 100644
--- a/nengo_dl/simulator.py
+++ b/nengo_dl/simulator.py
@@ -2121,7 +2121,7 @@ def __getattribute__(self, name):
         return super().__getattribute__(name)
 
 
-class SimulationData(collections.Mapping):
+class SimulationData(collections.abc.Mapping):
     """
     Data structure used to access simulation data from the model.