From 3acdd595c293a7d5085de831c9acd8156658ccc1 Mon Sep 17 00:00:00 2001
From: Mddct <hamddct@gmail.com>
Date: Mon, 27 Nov 2023 16:55:49 +0800
Subject: [PATCH] [text] revert wenet/utils/file_utils.py

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

diff --git a/wenet/utils/file_utils.py b/wenet/utils/file_utils.py
index 0444c1ac2f..aadf1095b2 100644
--- a/wenet/utils/file_utils.py
+++ b/wenet/utils/file_utils.py
@@ -39,7 +39,7 @@ def read_non_lang_symbols(non_lang_sym_path):
 
     """
     if non_lang_sym_path is None:
-        return {}
+        return None
     else:
         syms = read_lists(non_lang_sym_path)
         non_lang_syms_pattern = re.compile(r"(\[[^\[\]]+\]|<[^<>]+>|{[^{}]+})")