From 3929461f5015ddd24a3dbcb9715157179a521328 Mon Sep 17 00:00:00 2001
From: Shangtong Zhang <zhangshangtong.cpp@gmail.com>
Date: Tue, 8 May 2018 15:38:48 -0600
Subject: [PATCH] Use new style class

---
 deep_rl/utils/normalizer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/deep_rl/utils/normalizer.py b/deep_rl/utils/normalizer.py
index 95ffd47..fa183c6 100644
--- a/deep_rl/utils/normalizer.py
+++ b/deep_rl/utils/normalizer.py
@@ -5,7 +5,7 @@
 #######################################################################
 import numpy as np
 
-class BaseNormalizer:
+class BaseNormalizer(object):
     def __init__(self, read_only=False):
         self.read_only = read_only