Drop support for Python 2 and flake8 2.x

Enough time has passed for us to safely drop support for old versions of
Python 2 (and 3.6) and flake8.

.github/workflows/ci.yml

@@ -1,3 +1,4 @@
+---
 name: CI
 
 on:
@@ -13,20 +14,20 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [2.7, 3.6, 3.7, 3.8, 3.9, pypy2, pypy3]
+        python-version: [3.7, 3.8, 3.9, '3.10', 'pypy-3.7']
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
-      with:
-        python-version: ${{ matrix.python-version }}
-    - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install -r requirements.txt
-    - name: Tests
-      run: |
-        python setup.py check --restructuredtext
-        flake8
-        python setup.py test
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+      - name: Tests
+        run: |
+          python setup.py check --restructuredtext
+          flake8
+          python setup.py test

flake8_author.py

@@ -11,7 +11,7 @@
 import re
 
 __author__ = 'Jon Parise'
-__version__ = '1.2.0'
+__version__ = '2.0.0'
 
 
 class Checker(object):
@@ -29,12 +29,7 @@ def __init__(self, tree, filename):
 
     @classmethod
     def add_options(cls, parser):
-        extra_kwargs = {}
-        if hasattr(parser, 'config_options'):  # flake8 < 3.0
-            parser.config_options.append('author-attribute')
-            parser.config_options.append('author-pattern')
-        else:  # flake8 >= 3.0
-            extra_kwargs['parse_from_config'] = True
+        extra_kwargs = {'parse_from_config': True}
 
         parser.add_option(
             '--author-attribute',

setup.cfg

@@ -1,2 +1,39 @@
+[metadata]
+name = flake8-author
+version = attr: flake8_author.__version__
+author = Jon Parise
+author_email = jon@indelible.org
+description = Flake8 __author__ checker
+long_description = file: README.rst, LICENSE, CHANGES.rst
+license = MIT
+url = https://github.com/jparise/flake8-author
+project_urls =
+    Source Code = https://github.com/jparise/flake8-author
+    Issue Tracker = https://github.com/jparise/flake8-author/issues
+keywords = flake8 __author__
+classifiers =
+    Development Status :: 5 - Production/Stable
+    Environment :: Console
+    Framework :: Flake8
+    Intended Audience :: Developers
+    License :: OSI Approved :: MIT License
+    Programming Language :: Python
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.10
+    Topic :: Software Development :: Libraries :: Python Modules
+    Topic :: Software Development :: Quality Assurance
+
+[options]
+py_modules = flake8_author
+python_requires = >= 3.7
+zip_safe = True
+
+[options.entry_points]
+flake8.extension =
+    A40 = flake8_author:Checker
+
 [flake8]
 exclude=.eggs/,.git/,.venv/,build/,dist/

setup.py

@@ -1,53 +1,10 @@
 #!/usr/bin/env python
 
-import re
-
 from setuptools import setup
 
-
-def get_version(filename):
-    f = open(filename).read()
-    return re.search("__version__ = ['\"]([^'\"]+)['\"]", f).group(1)
-
-
-version = get_version('flake8_author.py')
-description = open('README.rst').read() + "\n\n" + open('CHANGES.rst').read()
-
 setup(
-    name='flake8-author',
-    version=version,
-    description='Flake8 __author__ checker',
-    long_description=description,
-    author='Jon Parise',
-    author_email='jon@indelible.org',
-    keywords='flake8 __author__',
-    url='https://github.com/jparise/flake8-author',
-    download_url='https://github.com/jparise/flake8-author/tarball/' + version,
-    license='MIT',
-    py_modules=['flake8_author'],
-    entry_points={
-        'flake8.extension': ['A40 = flake8_author:Checker'],
-    },
-    install_requires=['flake8'],
+    name="flake8-author",
+    install_requires=["flake8>=3.0.0"],
     tests_require=['flake8>=3.0.0'],
-    test_suite='tests',
-    zip_safe=True,
-    classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Environment :: Console',
-        'Framework :: Flake8',
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: 3.7',
-        'Programming Language :: Python :: 3.8',
-        'Programming Language :: Python :: 3.9',
-        'Topic :: Software Development :: Libraries :: Python Modules',
-        'Topic :: Software Development :: Quality Assurance'
-    ],
+    test_suite="tests",
 )