diff --git a/src/controller/python/test/unit_tests/test_tlv.py b/src/controller/python/test/unit_tests/test_tlv.py
index 12d5bb4f7ecb11..7a80b24c497320 100644
--- a/src/controller/python/test/unit_tests/test_tlv.py
+++ b/src/controller/python/test/unit_tests/test_tlv.py
@@ -167,9 +167,11 @@ def test_uint(self):
 
     def test_structure(self):
         test_cases = [
-            (b'\x15\x36\x01\x15\x35\x01\x26\x00\xBF\xA2\x55\x16\x37\x01\x24\x02\x00\x24\x03\x28\x24\x04\x00\x18\x24\x02\x01\x18\x18\x18\x18',
+            (b'\x15\x36\x01\x15\x35\x01\x26\x00\xBF\xA2\x55\x16\x37\x01\x24'
+             b'\x02\x00\x24\x03\x28\x24\x04\x00\x18\x24\x02\x01\x18\x18\x18\x18',
              {1: [{1: {0: 374710975, 1: TLVList([(2, 0), (3, 40), (4, 0)]), 2: 1}}]}),
-            (b'\x156\x01\x155\x01&\x00\xBF\xA2U\x167\x01$\x02\x00$\x03($\x04\x01\x18,\x02\x18Nordic Semiconductor ASA\x18\x18\x18\x18',
+            (b'\x156\x01\x155\x01&\x00\xBF\xA2U\x167\x01$\x02\x00$\x03($\x04\x01'
+             b'\x18,\x02\x18Nordic Semiconductor ASA\x18\x18\x18\x18',
              {1: [{1: {0: 374710975, 1: TLVList([(2, 0), (3, 40), (4, 1)]), 2: 'Nordic Semiconductor ASA'}}]}),
             (b"\0256\001\0255\001&\000\031\346x\2077\001$\002\001$\003\006$\004\000\030(\002\030\030\030\030",
              {1: [{1: {0: 2272847385, 1: TLVList([(2, 1), (3, 6), (4, 0)]), 2: False}}]})
@@ -196,20 +198,20 @@ def test_list(self):
 
 class TestTLVTypes(unittest.TestCase):
     def test_list(self):
-        l = TLVList([(None, 1), (None, 2), (1, 3)])
-        self.assertEqual(l[1], 3)
-        self.assertEqual(l[TLVList.IndexMethod.Index:0], (None, 1))
-        self.assertEqual(l[TLVList.IndexMethod.Tag:1], 3)
+        var = TLVList([(None, 1), (None, 2), (1, 3)])
+        self.assertEqual(var[1], 3)
+        self.assertEqual(var[TLVList.IndexMethod.Index:0], (None, 1))
+        self.assertEqual(var[TLVList.IndexMethod.Tag:1], 3)
 
-        l.append(None, 4)
-        self.assertEqual(l, TLVList([(None, 1), (None, 2), (1, 3), (None, 4)]))
+        var.append(None, 4)
+        self.assertEqual(var, TLVList([(None, 1), (None, 2), (1, 3), (None, 4)]))
 
-        l.append(5, 6)
-        self.assertEqual(l, TLVList([(None, 1), (None, 2), (1, 3), (None, 4), (5, 6)]))
+        var.append(5, 6)
+        self.assertEqual(var, TLVList([(None, 1), (None, 2), (1, 3), (None, 4), (5, 6)]))
 
         expectIterateContent = [(None, 1), (None, 2), (1, 3), (None, 4), (5, 6)]
         iteratedContent = []
-        for tag, value in l:
+        for tag, value in var:
             iteratedContent.append((tag, value))
         self.assertEqual(expectIterateContent, iteratedContent)