3 files changed, 13 insertions, 5 deletions
diff --git a/searx/answerers/__init__.py b/searx/answerers/__init__.py
index 8e2b9b35a..346bbb085 100644
--- a/searx/answerers/__init__.py
+++ b/searx/answerers/__init__.py
@@ -1,25 +1,30 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# pylint: disable=missing-module-docstring
+
+import sys
 from os import listdir
 from os.path import realpath, dirname, join, isdir
-from searx.utils import load_module
 from collections import defaultdict
 
+from searx.utils import load_module
 
 answerers_dir = dirname(realpath(__file__))
 
 
 def load_answerers():
-    answerers = []
+    answerers = []  # pylint: disable=redefined-outer-name
+
     for filename in listdir(answerers_dir):
         if not isdir(join(answerers_dir, filename)) or filename.startswith('_'):
             continue
         module = load_module('answerer.py', join(answerers_dir, filename))
-        if not hasattr(module, 'keywords') or not isinstance(module.keywords, tuple) or not len(module.keywords):
-            exit(2)
+        if not hasattr(module, 'keywords') or not isinstance(module.keywords, tuple) or not module.keywords:
+            sys.exit(2)
         answerers.append(module)
     return answerers
 
 
-def get_answerers_by_keywords(answerers):
+def get_answerers_by_keywords(answerers):  # pylint:disable=redefined-outer-name
     by_keyword = defaultdict(list)
     for answerer in answerers:
         for keyword in answerer.keywords:
diff --git a/searx/answerers/random/answerer.py b/searx/answerers/random/answerer.py
index a1306e2eb..efdce0407 100644
--- a/searx/answerers/random/answerer.py
+++ b/searx/answerers/random/answerer.py
@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
 import hashlib
 import random
 import string
diff --git a/searx/answerers/statistics/answerer.py b/searx/answerers/statistics/answerer.py
index 60f0d304f..3c38243de 100644
--- a/searx/answerers/statistics/answerer.py
+++ b/searx/answerers/statistics/answerer.py
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
 from functools import reduce
 from operator import mul