Drop py2 support (#478)

* Drop py2 support

* Support 3.7+

Author: ki4070ma

.travis.yml

@@ -2,12 +2,8 @@ language: python
 dist: xenial
 
 python:
-  - "2.7"
-  - "3.4"
-  - "3.5"
-  - "3.6"
   - "3.7"
-#  - "3.8-dev"  # TODO Remove comment-out when pylint and astroid upgraded to the latest and py2 support dropped
+  - "3.8"
 
 install:
   - pip install tox-travis

Pipfile

@@ -21,7 +21,6 @@ httpretty = "~=0.9"
 python-dateutil = "~=2.8"
 mock = "~=3.0"
 
-# TODO Update to the latest ver when py2 support dropped
-pylint = "~=1.9"
-astroid = "~=1.6"
+pylint = "~=2.4"
+astroid = "~=2.3"
 isort = "~=4.3"

setup.py

@@ -37,13 +37,10 @@
     packages=find_packages(include=['appium*']),
     license='Apache 2.0',
     classifiers=[
-        'Development Status :: 4 - Beta',
+        'Development Status :: 5 - Production/Stable',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
         'Environment :: Console',
         'Environment :: MacOS X',
         'Environment :: Win32 (MS Windows)',

tox.ini

@@ -1,12 +1,8 @@
 [tox]
 skipsdist = True
 envlist =
-    py27,
-    py34,
-    py35,
-    py36,
     py37,
-#    py38  # TODO Remove comment-out when pylint and astroid upgraded to the latest and py2 support dropped
+    py38
 
 [testenv]
 deps =