diff --git a/dbpf.py b/dbpf.py
index dae6332..717183b 100755
--- a/dbpf.py
+++ b/dbpf.py
@@ -468,7 +468,7 @@ def _write_int_next_4_bytes(integer):
 
         # Write header: DBPF
         f.seek(0)
-        f.write(b'\x44\x42\x50\x46')
+        f.write(b"\x44\x42\x50\x46")
 
         # Write header: Major version
         _write_int_at_pos(4, self.header.major_version)
diff --git a/patches.py b/patches.py
index 610fb82..d0be086 100755
--- a/patches.py
+++ b/patches.py
@@ -55,13 +55,13 @@ def get_image_file_type(data: bytes) -> str:
     # Check the first 4 bytes
     start = data[:4]
 
-    if start[:3] in [b'\x00\x00\x02', b'\x00\x00\n']:
+    if start[:3] in [b"\x00\x00\x02", b"\x00\x00\n"]:
         return IMAGE_FORMAT_TGA
-    elif start[:2] == b'BM':
+    elif start[:2] == b"BM":
         return IMAGE_FORMAT_BMP
-    elif start[:3] == b'\xff\xd8\xff':
+    elif start[:3] == b"\xff\xd8\xff":
         return IMAGE_FORMAT_JPG
-    elif start[:4] == b'\x89PNG':
+    elif start[:4] == b"\x89PNG":
         return IMAGE_FORMAT_PNG
     else:
         return IMAGE_UNKNOWN
@@ -129,7 +129,7 @@ def _update_attribute_coord(data, name):
             values = part.split("(")[1].split(")")[0]
             for number in values.split(","):
                 new_values.append(str(int(int(number) * UI_MULTIPLIER)))
-            part = f"{name}={part.replace(values, ','.join(new_values))}"
+            part = f"{name}={part.replace(values, ",".join(new_values))}"
             output.append(part)
         return "".join(output)
 
diff --git a/setup.py b/setup.py
index 4c1e7f8..d469bb3 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,9 @@
+"""
+For creating an application build using cx_Freeze.
+For maintainer use only.
+
+It is not needed to run the patcher from the repository.
+"""
 from cx_Freeze import Executable, setup
 
 build_exe_options = {
diff --git a/sims2_4k_ui_patcher.py b/sims2_4k_ui_patcher.py
index f06884e..c1d06da 100755
--- a/sims2_4k_ui_patcher.py
+++ b/sims2_4k_ui_patcher.py
@@ -254,9 +254,9 @@ def __init__(self, *args, **kwargs):
 
         # Set window properties
         self.title("UI Patcher for The Sims 2")
-        self.eval('tk::PlaceWindow . center')
+        self.eval("tk::PlaceWindow . center")
 
-        if self.tk.call("tk", "windowingsystem") == 'win32':
+        if self.tk.call("tk", "windowingsystem") == "win32":
             self.iconbitmap(get_resource("assets/icon.ico"))
 
         # A list of controls for selecting options