From 322a2d57bfdc52a9ce14bee93f9abb372cc08487 Mon Sep 17 00:00:00 2001
From: 5j9 <5j9@users.noreply.github.com>
Date: Sun, 23 Sep 2018 11:32:46 +0330
Subject: [PATCH] Try to import MutableMapping from collections.abc

Note that collections.abc has been added in Python 3.3.

Fixes #402
---
 html5lib/_trie/_base.py      | 5 ++++-
 html5lib/treebuilders/dom.py | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/html5lib/_trie/_base.py b/html5lib/_trie/_base.py
index a1158bbb..6b71975f 100644
--- a/html5lib/_trie/_base.py
+++ b/html5lib/_trie/_base.py
@@ -1,6 +1,9 @@
 from __future__ import absolute_import, division, unicode_literals
 
-from collections import Mapping
+try:
+    from collections.abc import Mapping
+except ImportError:  # Python 2.7
+    from collections import Mapping
 
 
 class Trie(Mapping):
diff --git a/html5lib/treebuilders/dom.py b/html5lib/treebuilders/dom.py
index dcfac220..d8b53004 100644
--- a/html5lib/treebuilders/dom.py
+++ b/html5lib/treebuilders/dom.py
@@ -1,7 +1,10 @@
 from __future__ import absolute_import, division, unicode_literals
 
 
-from collections import MutableMapping
+try:
+    from collections.abc import MutableMapping
+except ImportError:  # Python 2.7
+    from collections import MutableMapping
 from xml.dom import minidom, Node
 import weakref