Use setuptools declarative syntax through setup.cfg

https://setuptools.readthedocs.io/en/latest/setuptools.html#configuring-setup-using-setup-cfg-files

setup.cfg

@@ -1,3 +1,43 @@
+[metadata]
+name = html2text
+version = attr: html2text.__version__
+description = Turn HTML into equivalent Markdown-structured text.
+long_description = file: README.md
+long_description_content_type = text/markdown
+url = https://github.com/Alir3z4/html2text/
+author = Aaron Swartz
+author_email = me@aaronsw.com
+maintainer = Alireza Savand
+maintainer_email = alireza.savand@gmail.com
+license = GNU GPL 3
+classifiers =
+    Development Status :: 5 - Production/Stable
+    Intended Audience :: Developers
+    License :: OSI Approved :: GNU General Public License (GPL)
+    Operating System :: OS Independent
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3 :: Only
+    Programming Language :: Python :: Implementation :: CPython
+    Programming Language :: Python :: Implementation :: PyPy
+platform = OS Independent
+
+[options]
+zip_safe = False
+packages = html2text
+python_requires = >=3.5
+
+[options.entry_points]
+console_scripts =
+    html2text = html2text.cli:main
+
+[options.package_data]
+html2text = py.typed
+
 [flake8]
 max_line_length = 88
 ignore =

setup.py

@@ -1,42 +1,3 @@
 from setuptools import setup
 
-
-def readall(f):
-    with open(f) as fp:
-        return fp.read()
-
-
-setup(
-    name="html2text",
-    version=".".join(map(str, __import__("html2text").__version__)),
-    description="Turn HTML into equivalent Markdown-structured text.",
-    long_description=readall("README.md"),
-    long_description_content_type="text/markdown",
-    author="Aaron Swartz",
-    author_email="me@aaronsw.com",
-    maintainer="Alireza Savand",
-    maintainer_email="alireza.savand@gmail.com",
-    url="https://github.com/Alir3z4/html2text/",
-    platforms="OS Independent",
-    classifiers=[
-        "Development Status :: 5 - Production/Stable",
-        "Intended Audience :: Developers",
-        "License :: OSI Approved :: GNU General Public License (GPL)",
-        "Operating System :: OS Independent",
-        "Programming Language :: Python",
-        "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.8",
-        "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: Implementation :: CPython",
-        "Programming Language :: Python :: Implementation :: PyPy",
-    ],
-    python_requires=">=3.5",
-    entry_points={"console_scripts": ["html2text = html2text.cli:main"]},
-    license="GNU GPL 3",
-    packages=["html2text"],
-    package_data={"html2text": ["py.typed"]},
-    zip_safe=False,
-)
+setup()