:rotating light: Fix linting for setup.py (#2158)

* 🚨 Fix linting for setup.py

- F401 'os' imported but unused
- E303 too many blank lines (3)
- E302 expected 2 blank lines, found 1
- E305 expected 2 blank lines after class or function definition, found 1
- E251 unexpected spaces around keyword / parameter equals

* 👌 Add setup.py to flake8 tests

Author: opacam

setup.py

@@ -3,7 +3,6 @@
 from io import open  # for open(..,encoding=...) parameter in python 2
 from os import walk
 from os.path import join, dirname, sep
-import os
 import re
 from setuptools import setup, find_packages
 
@@ -17,7 +16,6 @@
 data_files = []
 
 
-
 # must be a single statement since buildozer is currently parsing it, refs:
 # https://github.com/kivy/buildozer/issues/722
 install_reqs = [
@@ -27,6 +25,7 @@
 ]
 # (pep517 and toml are used by pythonpackage.py)
 
+
 # By specifying every file manually, package_data will be able to
 # include them in binary distributions. Note that we have to add
 # everything as a 'pythonforandroid' rule, using '' apparently doesn't
@@ -42,6 +41,7 @@ def recursively_include(results, directory, patterns):
                 results[directory] = []
             results[directory].append(join(*filename.split(sep)[1:]))
 
+
 recursively_include(package_data, 'pythonforandroid/recipes',
                     ['*.patch', 'Setup*', '*.pyx', '*.py', '*.c', '*.h',
                      '*.mk', '*.jam', ])
@@ -104,7 +104,7 @@ def recursively_include(results, directory, patterns):
               'aar = pythonforandroid.bdistapk:BdistAAR',
               ],
           },
-      classifiers = [
+      classifiers=[
           'Development Status :: 5 - Production/Stable',
           'Intended Audience :: Developers',
           'License :: OSI Approved :: MIT License',

tox.ini

@@ -22,7 +22,7 @@ commands =
 
 [testenv:pep8]
 deps = flake8
-commands = flake8 pythonforandroid/ tests/ ci/
+commands = flake8 pythonforandroid/ tests/ ci/ setup.py
 
 [flake8]
 ignore =