Disable core linting with Python 3.6

.github/workflows/core.yml

@@ -33,6 +33,7 @@ jobs:
           pip install tox
 
       - name: Python Lint
+        if: ${{ matrix.python-version != '3.6' }}
         run: |
           tox -e lint
 

.pylintrc

@@ -4,6 +4,8 @@ output-format=colorized
 [MESSAGES CONTROL]
 disable=
     missing-docstring,
+    duplicate-code,
     invalid-name,
     too-few-public-methods,
-    consider-using-f-string
+    consider-using-f-string,
+    cyclic-import

Makefile

@@ -1,6 +1,6 @@
 lint:
-	pylint -j 6 --rcfile=./.pylintrc ./tests
-	pylint -j 6 --rcfile=./.pylintrc ./platformio
+	pylint --rcfile=./.pylintrc ./tests
+	pylint --rcfile=./.pylintrc ./platformio
 
 isort:
 	isort ./platformio

tox.ini

@@ -41,7 +41,8 @@ commands =
 [testenv:lint]
 commands =
     {envpython} --version
-    pylint --rcfile=./.pylintrc ./platformio ./tests
+    pylint --rcfile=./.pylintrc ./platformio
+    pylint --rcfile=./.pylintrc ./tests
 
 [testenv:testcore]
 commands =
@@ -54,7 +55,6 @@ commands =
     py.test -v --basetemp="{envtmpdir}" tests/test_examples.py
 
 [testenv:docs]
-; basepython = ~/.pyenv/versions/3.6.12/bin/python
 deps =
     sphinx
     sphinx_rtd_theme