Use Final for constants

Signed-off-by: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>

Author: thombashi

mbstrdecoder/__version__.py

@@ -1,6 +1,9 @@
-__author__ = "Tsuyoshi Hombashi"
-__copyright__ = f"Copyright 2016, {__author__}"
-__license__ = "MIT License"
+from typing import Final
+
+
+__author__: Final = "Tsuyoshi Hombashi"
+__copyright__: Final = f"Copyright 2016, {__author__}"
+__license__: Final = "MIT License"
 __version__ = "1.1.3"
-__maintainer__ = __author__
-__email__ = "tsuyoshi.hombashi@gmail.com"
+__maintainer__: Final = __author__
+__email__: Final = "tsuyoshi.hombashi@gmail.com"

mbstrdecoder/_binary_ext_checker.py

@@ -3,10 +3,11 @@
 """
 
 import os.path
+from typing import Final
 
 
 # list from https://github.com/sindresorhus/binary-extensions
-binary_exts = (
+binary_exts: Final = (
     "3dm",
     "3ds",
     "3g2",

mbstrdecoder/_mbstrdecoder.py

@@ -5,7 +5,7 @@
 import copy
 import re
 from collections.abc import Sequence
-from typing import Optional
+from typing import Final, Optional
 
 from ._func import to_codec_name
 
@@ -20,7 +20,7 @@ class MultiByteStrDecoder:
         https://docs.python.org/3/library/codecs.html
     """
 
-    __CODECS = [
+    __CODECS: Final = [
         "utf_7",
         "utf_8",
         "utf_8_sig",

setup.py

@@ -3,14 +3,15 @@
 """
 
 import os.path
+from typing import Final
 
 import setuptools
 
 
-MODULE_NAME = "mbstrdecoder"
-REPOSITORY_URL = f"https://github.com/thombashi/{MODULE_NAME:s}"
-REQUIREMENT_DIR = "requirements"
-ENCODING = "utf8"
+MODULE_NAME: Final = "mbstrdecoder"
+REPOSITORY_URL: Final = f"https://github.com/thombashi/{MODULE_NAME:s}"
+REQUIREMENT_DIR: Final = "requirements"
+ENCODING: Final = "utf8"
 
 pkg_info: dict[str, str] = {}