From b301b1f3f0a6d4a8fec9ed9fed5bab44292f4d30 Mon Sep 17 00:00:00 2001
From: "Haoyu (Daniel)" <yanghaoyu97@outlook.com>
Date: Fri, 10 Jan 2025 11:51:19 +0800
Subject: [PATCH] Revert "remove custom encoding warning after python 3.10+"

This reverts commit cb6b56040dfc0fcbdacc41d886037868924f80ec.
---
 src/monty/io.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/monty/io.py b/src/monty/io.py
index 1f3981d9..1b454899 100644
--- a/src/monty/io.py
+++ b/src/monty/io.py
@@ -22,6 +22,9 @@
     from typing import IO, Any, Iterator, Union
 
 
+class EncodingWarning(Warning): ...  # Added in Python 3.10
+
+
 def zopen(
     filename: Union[str, Path],
     /,