From f3142915ea5a25872e8d46706d1274499a0b3ccb Mon Sep 17 00:00:00 2001
From: huooyk <huooyk@qq.com>
Date: Wed, 18 Sep 2019 01:44:43 +0800
Subject: [PATCH] Add exception hint

---
 pytiled_parser/xml_parser.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/pytiled_parser/xml_parser.py b/pytiled_parser/xml_parser.py
index 63b0796..81a13f7 100644
--- a/pytiled_parser/xml_parser.py
+++ b/pytiled_parser/xml_parser.py
@@ -145,7 +145,12 @@ def _parse_data(element: etree.Element, layer_width: int) -> objects.LayerData:
     Returns:
         LayerData: Data object containing layer data or chunks of data.
     """
-    encoding = element.attrib["encoding"]
+    try:
+        encoding = element.attrib["encoding"]
+    except KeyError as e:
+        print( "The tmx_file must be encoding by csv,. base64, gzip-base64, or zlip-base64")
+        raise e
+
     compression = None
     try:
         compression = element.attrib["compression"]