Drop support for EOL Python 2

.travis.yml

@@ -4,7 +4,6 @@
 language: python
 
 python:
-  - "2.7"
   - "3.5"
   - "3.6"
   - "3.7"

setup.cfg

@@ -2,12 +2,3 @@
 # This includes the license file(s) in the wheel.
 # https://wheel.readthedocs.io/en/stable/user_guide.html#including-license-files-in-the-generated-wheel-file
 license_files = LICENSE.txt
-
-[bdist_wheel]
-# This flag says to generate wheels that support both Python 2 and Python
-# 3. If your code will not run unchanged on both Python 2 and 3, you will
-# need to generate separate wheels for each Python version that you
-# support. Removing this line (or setting universal to 0) will prevent
-# bdist_wheel from trying to make a universal wheel. For more see:
-# https://packaging.python.org/guides/distributing-packages-using-setuptools/#wheels
-universal=1

setup.py

@@ -8,11 +8,6 @@
 # Always prefer setuptools over distutils
 from setuptools import setup, find_packages
 from os import path
-# io.open is needed for projects that support Python 2.7
-# It ensures open() defaults to text mode with universal newlines,
-# and accepts an argument to specify the text encoding
-# Python 3 only projects can skip this import
-from io import open
 
 here = path.abspath(path.dirname(__file__))
 
@@ -104,16 +99,14 @@
         'License :: OSI Approved :: MIT License',
 
         # Specify the Python versions you support here. In particular, ensure
-        # that you indicate whether you support Python 2, Python 3 or both.
-        # These classifiers are *not* checked by 'pip install'. See instead
-        # 'python_requires' below.
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
+        # that you indicate you support Python 3. These classifiers are *not*
+        # checked by 'pip install'. See instead 'python_requires' below.
         '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',
     ],
 
     # This field adds keywords for your project which will appear on the
@@ -139,10 +132,9 @@
 
     # Specify which Python versions you support. In contrast to the
     # 'Programming Language' classifiers above, 'pip install' will check this
-    # and refuse to install the project if the version does not match. If you
-    # do not support Python 2, you can simplify this to '>=3.5' or similar, see
+    # and refuse to install the project if the version does not match. See
     # https://packaging.python.org/guides/distributing-packages-using-setuptools/#python-requires
-    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4',
+    python_requires='>=3.5, <4',
 
     # This field lists other packages that your project depends on to run.
     # Any package you put here will be installed by pip when your project is
@@ -167,16 +159,13 @@
 
     # If there are data files included in your packages that need to be
     # installed, specify them here.
-    #
-    # If using Python 2.6 or earlier, then these have to be included in
-    # MANIFEST.in as well.
     package_data={  # Optional
         'sample': ['package_data.dat'],
     },
 
     # Although 'package_data' is the preferred approach, in some case you may
     # need to place data files outside of your packages. See:
-    # http://docs.python.org/3.4/distutils/setupscript.html#installing-additional-files
+    # http://docs.python.org/distutils/setupscript.html#installing-additional-files
     #
     # In this case, 'data_file' will be installed into '<sys.prefix>/my_data'
     data_files=[('my_data', ['data/data_file'])],  # Optional

src/sample/__init__.py

@@ -1,4 +1,3 @@
-
 def main():
     """Entry point for the application script"""
     print("Call your main application code here")

tox.ini

@@ -13,7 +13,7 @@
 #  and also to help confirm pull requests to this project.
 
 [tox]
-envlist = py{27,35,36,37,38}
+envlist = py{35,36,37,38}
 
 # Define the minimal tox version required to run;
 # if the host tox is less than this the tool with create an environment and
@@ -28,13 +28,13 @@ isolated_build = true
 
 [testenv]
 deps =
-    check-manifest
+    check-manifest >= 0.42
     # If your project uses README.rst, uncomment the following:
     # readme_renderer
     flake8
     pytest
 commands =
-    check-manifest --ignore 'tox.ini,tests,tests/**'
+    check-manifest --ignore 'tox.ini,tests/**'
     # This repository uses a Markdown long_description, so the -r flag to
     # `setup.py check` is not needed. If your project contains a README.rst,
     # use `python setup.py check -m -r -s` instead.