remove some leftover python 2 compat

Author: asottile

pycodestyle.py

@@ -47,7 +47,9 @@
 900 syntax error
 """
 import bisect
+import configparser
 import inspect
+import io
 import keyword
 import os
 import re
@@ -59,12 +61,6 @@
 from functools import lru_cache
 from optparse import OptionParser
 
-try:
-    from configparser import RawConfigParser
-    from io import TextIOWrapper
-except ImportError:
-    from ConfigParser import RawConfigParser
-
 # this is a performance hack.  see https://bugs.python.org/issue43014
 if (
         sys.version_info < (3, 10) and
@@ -1769,7 +1765,7 @@ def readlines(filename):
 
 def stdin_get_value():
     """Read the value from stdin."""
-    return TextIOWrapper(sys.stdin.buffer, errors='ignore').read()
+    return io.TextIOWrapper(sys.stdin.buffer, errors='ignore').read()
 
 
 noqa = lru_cache(512)(re.compile(r'# no(?:qa|pep8)\b', re.I).search)
@@ -2558,7 +2554,7 @@ def read_config(options, args, arglist, parser):
     merged together (in that order) using the read method of
     ConfigParser.
     """
-    config = RawConfigParser()
+    config = configparser.RawConfigParser()
 
     cli_conf = options.config
 

testsuite/test_shell.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
+import configparser
 import os.path
 import sys
 import unittest
@@ -15,7 +16,7 @@ def setUp(self):
         self._saved_stdout = sys.stdout
         self._saved_stderr = sys.stderr
         self._saved_pconfig = pycodestyle.PROJECT_CONFIG
-        self._saved_cpread = pycodestyle.RawConfigParser._read
+        self._saved_cpread = configparser.RawConfigParser._read
         self._saved_stdin_get_value = pycodestyle.stdin_get_value
         self._config_filenames = []
         self.stdin = ''
@@ -25,15 +26,15 @@ def setUp(self):
 
         def fake_config_parser_read(cp, fp, filename):
             self._config_filenames.append(filename)
-        pycodestyle.RawConfigParser._read = fake_config_parser_read
+        configparser.RawConfigParser._read = fake_config_parser_read
         pycodestyle.stdin_get_value = self.stdin_get_value
 
     def tearDown(self):
         sys.argv = self._saved_argv
         sys.stdout = self._saved_stdout
         sys.stderr = self._saved_stderr
         pycodestyle.PROJECT_CONFIG = self._saved_pconfig
-        pycodestyle.RawConfigParser._read = self._saved_cpread
+        configparser.RawConfigParser._read = self._saved_cpread
         pycodestyle.stdin_get_value = self._saved_stdin_get_value
 
     def stdin_get_value(self):