Require Python 3.6 in tox and github actions

Author: jaraco

.github/workflows/main.yml

@@ -6,7 +6,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
+        python: [3.6, 3.7, 3.8, 3.9]
         platform: [ubuntu-latest, macos-latest, windows-latest]
     runs-on: ${{ matrix.platform }}
     steps:

coverage.ini

@@ -17,7 +17,6 @@ exclude_lines =
     raise NotImplementedError
     raise AssertionError
     assert\s
-    nocoverpy${PYV}
 
 [paths]
 source =

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = {py27,py35,py36,py37,py38}{,-cov,-diffcov},qa,docs,perf
+envlist = {py36,py37,py38}{,-cov,-diffcov},qa,docs,perf
 skip_missing_interpreters = True
 minversion = 3.2
 # Ensure that a late version of pip is used even on tox-venv.
@@ -32,8 +32,6 @@ setenv =
     cov: COVERAGE_PROCESS_START={[coverage]rcfile}
     cov: COVERAGE_OPTIONS="-p"
     cov: COVERAGE_FILE={toxinidir}/.coverage
-    py27: PYV=2
-    py35,py36,py37,py38: PYV=3
     # workaround deprecation warnings in pip's vendored packages
     PYTHONWARNINGS=ignore:Using or importing the ABCs:DeprecationWarning:pip._vendor
 extras =