diff --git a/aider/coders/editblock_func_coder.py b/aider/coders/editblock_func_coder.py
index 42bbb20f359..27aa53f115c 100644
--- a/aider/coders/editblock_func_coder.py
+++ b/aider/coders/editblock_func_coder.py
@@ -111,9 +111,9 @@ def _update_files(self):
             updated = get_arg(edit, "updated_lines")
 
             # gpt-3.5 returns lists even when instructed to return a string!
-            if self.code_format == "list" or type(original) == list:
+            if self.code_format == "list" or type(original) is list:
                 original = "\n".join(original)
-            if self.code_format == "list" or type(updated) == list:
+            if self.code_format == "list" or type(updated) is list:
                 updated = "\n".join(updated)
 
             if original and not original.endswith("\n"):
diff --git a/aider/commands.py b/aider/commands.py
index 466332150c5..7a73f531117 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -529,7 +529,9 @@ def glob_filtered_to_repo(self, pattern):
                 # Handle absolute paths
                 raw_matched_files = [Path(pattern)]
             else:
-                raw_matched_files = list(Path(self.coder.root).glob(pattern))
+                raw_matched_files = list(
+                    Path(self.coder.root).glob(pattern)
+                )
         except ValueError as err:
             self.io.tool_error(f"Error matching {pattern}: {err}")
             raw_matched_files = []
@@ -539,9 +541,9 @@ def glob_filtered_to_repo(self, pattern):
             matched_files += expand_subdir(fn)
 
         matched_files = [
-            str(Path(fn).relative_to(self.coder.root))
+            fn.relative_to(self.coder.root)
             for fn in matched_files
-            if Path(fn).is_relative_to(self.coder.root)
+            if fn.is_relative_to(self.coder.root)
         ]
 
         # if repo, filter against it
@@ -555,8 +557,6 @@ def glob_filtered_to_repo(self, pattern):
     def cmd_add(self, args):
         "Add files to the chat so aider can edit them or review them in detail"
 
-        added_fnames = []
-
         all_matched_files = set()
 
         filenames = parse_quoted_filenames(args)
@@ -618,7 +618,6 @@ def cmd_add(self, args):
                     self.io.tool_output(
                         f"Moved {matched_file} from read-only to editable files in the chat"
                     )
-                    added_fnames.append(matched_file)
                 else:
                     self.io.tool_error(
                         f"Cannot add {matched_file} as it's not part of the repository"
@@ -637,7 +636,6 @@ def cmd_add(self, args):
                     self.coder.abs_fnames.add(abs_file_path)
                     self.io.tool_output(f"Added {matched_file} to the chat")
                     self.coder.check_added_files()
-                    added_fnames.append(matched_file)
 
     def completions_drop(self):
         files = self.coder.get_inchat_relative_files()
@@ -1081,7 +1079,6 @@ def cmd_settings(self, args):
 
 
 def expand_subdir(file_path):
-    file_path = Path(file_path)
     if file_path.is_file():
         yield file_path
         return
@@ -1089,7 +1086,7 @@ def expand_subdir(file_path):
     if file_path.is_dir():
         for file in file_path.rglob("*"):
             if file.is_file():
-                yield str(file)
+                yield file
 
 
 def parse_quoted_filenames(args):
diff --git a/tests/basic/test_editblock.py b/tests/basic/test_editblock.py
index 61d3c8668d0..037333b5922 100644
--- a/tests/basic/test_editblock.py
+++ b/tests/basic/test_editblock.py
@@ -18,7 +18,7 @@ def setUp(self):
 
     def test_find_filename(self):
         fence = ("```", "```")
-        valid_fnames = ["file1.py", "file2.py", "dir/file3.py", "\windows\__init__.py"]
+        valid_fnames = ["file1.py", "file2.py", "dir/file3.py", r"\windows\__init__.py"]
 
         # Test with filename on a single line
         lines = ["file1.py", "```"]
@@ -45,8 +45,8 @@ def test_find_filename(self):
         self.assertEqual(eb.find_filename(lines, fence, valid_fnames), "file1.py")
 
         # Test with fuzzy matching
-        lines = ["\windows__init__.py", "```"]
-        self.assertEqual(eb.find_filename(lines, fence, valid_fnames), "\windows\__init__.py")
+        lines = [r"\windows__init__.py", "```"]
+        self.assertEqual(eb.find_filename(lines, fence, valid_fnames), r"\windows\__init__.py")
 
     # fuzzy logic disabled v0.11.2-dev
     def __test_replace_most_similar_chunk(self):