Format with black.

setup.py

@@ -1,23 +1,23 @@
 from setuptools import setup
 
-with open('README.rst') as readme:
+with open("README.rst") as readme:
     README = readme.read()
 
 setup(
-    name='dataclasses',
-    version='0.6',
-    description='A backport of the dataclasses module for Python 3.6',
+    name="dataclasses",
+    version="0.6",
+    description="A backport of the dataclasses module for Python 3.6",
     long_description=README,
-    url='https://github.com/ericvsmith/dataclasses',
-    author='Eric V. Smith',
-    author_email='eric@python.org',
-    license='Apache',
+    url="https://github.com/ericvsmith/dataclasses",
+    author="Eric V. Smith",
+    author_email="eric@python.org",
+    license="Apache",
     classifiers=[
-        'Development Status :: 4 - Beta',
-        'Intended Audience :: Developers',
-        'Topic :: Software Development :: Libraries :: Python Modules',
-        'License :: OSI Approved :: Apache Software License',
-        'Programming Language :: Python :: 3.6',
+        "Development Status :: 4 - Beta",
+        "Intended Audience :: Developers",
+        "Topic :: Software Development :: Libraries :: Python Modules",
+        "License :: OSI Approved :: Apache Software License",
+        "Programming Language :: Python :: 3.6",
     ],
-    py_modules=['dataclasses']
+    py_modules=["dataclasses"],
 )