Add python 3.8 support (#1334)

* Add python 3.8 support

* Update integration and deploy stages to use py38

Co-authored-by: Kevin DeJong <kddejong@amazon.com>

.travis.yml

@@ -11,8 +11,8 @@ stages:
 jobs:
   include:
   - stage: Linting
-    python: 3.7
-    env: TOXENV=pylint37
+    python: 3.8
+    env: TOXENV=pylint38
   - python: 2.7
     env: TOXENV=pylint27
   - stage: Unit Tests
@@ -23,16 +23,18 @@ jobs:
   - python: 3.5
     env: TOXENV=py35
   - python: 3.6
-    env: TOXENV=py36,codecov
+    env: TOXENV=py36
   - python: 3.7
     env: TOXENV=py37
+  - python: 3.8
+    env: TOXENV=py38, codecov
   - stage: Integration
-    python: 3.7
-    script: docker run --rm -it -v ${PWD}:/cfnlint -w /cfnlint python:3.7.1-alpine3.8
+    python: 3.8
+    script: docker run --rm -it -v ${PWD}:/cfnlint -w /cfnlint python:3.8.1-alpine3.11
       /bin/sh -c 'pip3 install -e . && cfn-lint test/fixtures/templates/good/generic.yaml && cat test/fixtures/templates/good/generic.yaml | cfn-lint'
   - stage: Deploy
     script: skip
-    python: 3.6
+    python: 3.8
     deploy:
       provider: pypi
       user: kddejong

setup.py

@@ -94,5 +94,6 @@ def get_version(filename):
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
     ],
 )

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,34,35,36,37},pylint{37,36,27}
+envlist = py{27,34,35,36,37,38},pylint{27,36,37,38}
 
 [testenv]
 commands =
@@ -28,6 +28,15 @@ commands =
   coverage report
   codecov
 
+[testenv:pylint38]
+basepython = python3.8
+deps =
+  pylint_quotes
+  pylint
+commands =
+  pip install -e .
+  pylint --load-plugins pylint_quotes src/cfnlint
+
 [testenv:pylint37]
 basepython = python3.7
 deps =