From 5bcbec9b061b02900dbd8b9751f68bbb5687247d Mon Sep 17 00:00:00 2001
From: Alexandre Flament <alex@al-f.net>
Date: Sat, 18 Jun 2022 07:38:36 +0200
Subject: [PATCH] Fix: use sys.modules.copy() to avoid RuntimeError

use sys.modules.copy() to avoid "RuntimeError: dictionary changed size during iteration"
see https://github.com/python/cpython/issues/89516
and https://docs.python.org/3.10/library/sys.html#sys.modules

close https://github.com/searxng/searxng/issues/1342
---
 searx/engines/__init__.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/searx/engines/__init__.py b/searx/engines/__init__.py
index ae132f48d..3fb0bcfb1 100644
--- a/searx/engines/__init__.py
+++ b/searx/engines/__init__.py
@@ -149,7 +149,11 @@ def set_loggers(engine, engine_name):
     engine.logger = logger.getChild(engine_name)
     # the engine may have load some other engines
     # may sure the logger is initialized
-    for module_name, module in sys.modules.items():
+    # use sys.modules.copy() to avoid "RuntimeError: dictionary changed size during iteration"
+    # see https://github.com/python/cpython/issues/89516
+    # and https://docs.python.org/3.10/library/sys.html#sys.modules
+    modules = sys.modules.copy()
+    for module_name, module in modules.items():
         if (
             module_name.startswith("searx.engines")
             and module_name != "searx.engines.__init__"