Test also on Python 3.9.

Author: jaraco

.gitlab-ci.yml

@@ -11,7 +11,7 @@ qa:
 
 tests:
   script:
-    - tox -e py27,py35,py36,py37,py38
+    - tox -e py27,py35,py36,py37,py38,py39
 
 Windows tests:
   extends: tests
@@ -38,14 +38,14 @@ Windows tests:
 
 coverage:
   script:
-    - tox -e py27-cov,py35-cov,py36-cov,py37-cov,py38-cov
+    - tox -e py27-cov,py35-cov,py36-cov,py37-cov,py38-cov,py39-cov
   artifacts:
     paths:
       - coverage.xml
 
 diffcov:
   script:
-    - tox -e py27-diffcov,py35-diffcov,py36-diffcov,py37-diffcov,py38-diffcov
+    - tox -e py27-diffcov,py35-diffcov,py36-diffcov,py37-diffcov,py38-diffcov,py39-diffcov
 
 docs:
   script:

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 # Coverage is missing on later version of Python
-envlist = {py27,py35,py36,py37,py38}{,-cov,-diffcov},qa,docs
+envlist = {py27,py35,py36,py37,py38,py39}{,-cov,-diffcov},qa,docs
 skip_missing_interpreters = True
 
 
@@ -29,11 +29,11 @@ setenv =
     cov: COVERAGE_OPTIONS="-p"
     cov: COVERAGE_FILE={toxinidir}/.coverage
     py27: OMIT=3
-    py35,py36,py37,py38: OMIT=2
+    py35,py36,py37,py38,py39: OMIT=2
 
 
 [testenv:qa]
-basepython = python3.8
+basepython = python3.9
 commands =
     python -m flake8 importlib_resources
     mypy importlib_resources