fix linting

setup.py

@@ -2,8 +2,7 @@
 # coding: utf-8
 
 import os
-import codecs
-import re
+
 from setuptools.command.build_ext import build_ext
 
 try:
@@ -12,13 +11,12 @@
     from distutils import sysconfig
 
 try:
-    from setuptools import setup, Extension
+    from setuptools import Extension, setup
 except ImportError:
-    from distutils.core import setup, Extension
+    from distutils.core import Extension, setup
 
 from Cython.Build import cythonize
 
-
 join = os.path.join
 
 cchardet_dir = join("src", "cchardet") + os.path.sep
@@ -47,13 +45,19 @@
 # Remove the "-Wstrict-prototypes" compiler option, which isn't valid for C++.
 cfg_vars = sysconfig.get_config_vars()
 for key, value in cfg_vars.items():
-    if type(value) == str:
+    if isinstance(value, str):
         cfg_vars[key] = value.replace("-Wstrict-prototypes", "")
         # O3を指定したところで速度が向上するかは疑問である
         # cfg_vars[key] = value.replace("-O2", "-O3")
 
 
-cchardet_module = Extension("cchardet._cchardet", sources, language="c++", extra_compile_args=['-std=c++11'], **ext_args,)
+cchardet_module = Extension(
+    "cchardet._cchardet",
+    sources,
+    language="c++",
+    extra_compile_args=['-std=c++11'],
+    **ext_args
+)
 
 
 def read(f):

src/tests/cchardet_test.py

@@ -1,10 +1,11 @@
 import glob
 import os
 import platform
+import sys
 
-import cchardet
 import pytest
-import sys
+
+import cchardet
 
 SKIP_LIST = [
     os.path.join("tests", "testdata", "ja", "utf-16le.txt"),
@@ -93,8 +94,6 @@ def test_decode():
         if testfile.replace("\\", "/") in SKIP_LIST_02:
             continue
 
-        base = os.path.basename(testfile)
-        expected_charset = os.path.splitext(base)[0]
         with open(testfile, "rb") as f:
             msg = f.read()
         detected_encoding = cchardet.detect(msg)

tests/bench.py

@@ -1,8 +1,9 @@
 import time
 
-import cchardet
 import chardet
 
+import cchardet
+
 
 def main():
     do_times = 100