From d6e928f47209396d0f6c0b155eb07115c4855c93 Mon Sep 17 00:00:00 2001
From: Eugenio Lacuesta <eugenio.lacuesta@gmail.com>
Date: Fri, 10 Jan 2020 04:40:03 -0300
Subject: [PATCH] Remove object as base class for MutableChain

Plus some minor styling adjustments
---
 scrapy/utils/python.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/scrapy/utils/python.py b/scrapy/utils/python.py
index 875650f3e..e5582cc18 100644
--- a/scrapy/utils/python.py
+++ b/scrapy/utils/python.py
@@ -1,15 +1,15 @@
 """
 This module contains essential stuff that should've come with Python itself ;)
 """
+import errno
 import gc
+import inspect
 import os
 import re
-import inspect
+import sys
 import weakref
-import errno
 from functools import partial, wraps
 from itertools import chain
-import sys
 
 from scrapy.utils.decorators import deprecated
 
@@ -371,7 +371,7 @@ else:
         gc.collect()
 
 
-class MutableChain(object):
+class MutableChain:
     """
     Thin wrapper around itertools.chain, allowing to add iterables "in-place"
     """