drop python3.6

github actions no longer supports it

Author: asottile

.github/workflows/main.yml

@@ -14,10 +14,7 @@ jobs:
           py: 3.9
           toxenv: py
         - os: ubuntu-latest
-          py: pypy3
-          toxenv: py
-        - os: ubuntu-latest
-          py: 3.6
+          py: pypy3.9
           toxenv: py
         - os: ubuntu-latest
           py: 3.7
@@ -32,15 +29,18 @@ jobs:
           py: '3.10'
           toxenv: py
         - os: ubuntu-latest
-          py: '3.11-dev'
+          py: '3.11'
+          toxenv: py
+        - os: ubuntu-latest
+          py: '3.12-dev'
           toxenv: py
         - os: ubuntu-latest
           py: 3.9
           toxenv: flake8
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.py }}
     - run: pip install tox

.pre-commit-config.yaml

@@ -11,12 +11,12 @@ repos:
     rev: v3.9.0
     hooks:
     -   id: reorder-python-imports
-        args: [--py36-plus]
+        args: [--py37-plus]
 -   repo: https://github.com/asottile/pyupgrade
     rev: v3.3.0
     hooks:
     -   id: pyupgrade
-        args: [--py36-plus]
+        args: [--py37-plus]
 -   repo: https://github.com/pycqa/flake8
     rev: 6.0.0
     hooks:

setup.py

@@ -31,7 +31,7 @@ def get_long_description():
     py_modules=['pycodestyle'],
     include_package_data=True,
     zip_safe=False,
-    python_requires='>=3.6',
+    python_requires='>=3.7',
     entry_points={
         'console_scripts': [
             'pycodestyle = pycodestyle:_main',
@@ -45,9 +45,6 @@ def get_long_description():
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Software Development :: Libraries :: Python Modules',

testsuite/test_api.py

@@ -329,7 +329,10 @@ def test_check_nullbytes(self):
         count_errors = pep8style.input_file('stdin', lines=['\x00\n'])
 
         stdout = sys.stdout.getvalue()
-        expected = "stdin:1:1: E901 ValueError"
+        if sys.version_info < (3, 12):
+            expected = "stdin:1:1: E901 ValueError"
+        else:
+            expected = "stdin:1:1: E901 SyntaxError: source code string cannot contain null bytes"  # noqa: E501
         self.assertTrue(stdout.startswith(expected),
                         msg='Output %r does not start with %r' %
                         (stdout, expected))

tox.ini

@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py36, py37, py38, py39, py310, pypy3
+envlist = py, pypy3
 skip_missing_interpreters = True
 
 [testenv]