Test with Python 3.8 (#263)

.python-version

@@ -1,3 +1,4 @@
+3.8.0
 3.7.4
 3.6.9
 3.5.7

.travis.yml

@@ -1,4 +1,4 @@
-dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
+dist: xenial
 env:
   global:
     - ELASTICSEARCH_URL="http://localhost:9200/"
@@ -20,6 +20,7 @@ python:
   - "3.5"
   - "3.6"
   - "3.7"
+  - "3.8"
 
 script:
   - pip install --upgrade tox
@@ -30,7 +31,7 @@ jobs:
   include:
     - stage: test
       name: "Check code style"
-      python: "3.7"  # prevent matrix expansion
+      python: "3.8"  # prevent matrix expansion
       script:
         - pip install --upgrade tox
         - tox -e check

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 ## Pending
 
+### Added
+
+- Python 3.8 testing and PyPI trove classifier - no code changes were required
+  so older versions should work too
+  ([PR #263](https://github.com/scoutapp/scout_apm_python/pull/263)).
+
 ### Fixed
 
 - Changed `scout_apm.api.install()` signature to not take `*args, **kwargs` but

setup.py

@@ -80,5 +80,6 @@
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
     ],
 )

tox.ini

@@ -4,10 +4,10 @@ envlist =
     check,
     {py27,py34,py35}-django18,
     {py27,py34,py35,py36}-django111,
-    {py34,py35,py36,py37}-django20,
-    {py35,py36,py37}-django21,
-    {py35,py36,py37}-django22
-    {py36,py37}-django30
+    {py34,py35,py36,py37,py38}-django20,
+    {py35,py36,py37,py38}-django21,
+    {py35,py36,py37,py38}-django22
+    {py36,py37,py38}-django30
 
 [testenv]
 basepython =
@@ -16,7 +16,8 @@ basepython =
     py35: {env:TOXPYTHON:python3.5}
     py36: {env:TOXPYTHON:python3.6}
     py37: {env:TOXPYTHON:python3.7}
-    {clean,check,report}: {env:TOXPYTHON:python3.7}
+    py38: {env:TOXPYTHON:python3.8}
+    {clean,check,report}: {env:TOXPYTHON:python3.8}
 setenv =
     PYTHONPATH={toxinidir}/tests
     PYTHONUNBUFFERED=yes
@@ -71,7 +72,9 @@ commands =
     check-manifest {toxinidir}
     black --check src tests setup.py
     isort --check-only --recursive src tests setup.py
-    flake8 src tests setup.py
+    # --jobs 0 is used because of https://gitlab.com/pycqa/flake8/issues/587
+    # should be removed when fixed to speed up
+    flake8 --jobs 0 src tests setup.py
     twine check {distdir}/*
 
 [testenv:report]