Optimize CI

Signed-off-by: Aleksei Stepanov <penguinolog@gmail.com>

(cherry picked from commit 66606da)
Signed-off-by: Aleksei Stepanov <penguinolog@gmail.com>

Author: penguinolog

.travis.yml

@@ -68,7 +68,7 @@ jobs:
     install:
     - *upgrade_python_toolset
     - *install_deps
-    - pip install --upgrade "pylint >= 2.2"
+    - pip install --upgrade "pylint >= 2.2" isort[pyproject,requirements]
     script:
     - pylint exec_helpers
   - <<: *static_analysis

tox.ini

@@ -80,7 +80,8 @@ commands = pip install ./ -vvv -U
 [testenv:pylint]
 usedevelop = False
 deps =
-    pylint>=2
+    pylint>=2.2
+    isort[pyproject,requirements]
     -r{toxinidir}/CI_REQUIREMENTS.txt
 commands = pylint exec_helpers
 
@@ -98,16 +99,16 @@ exclude =
     docs
 ignore =
     E203,
-    W503
-    D401,
-    D202,
-    D203,
-    D213
 # whitespace before ':'
+    W503,
 # line break before binary operator
+    D401,
 # First line should be in imperative mood; try rephrasing
+    D202,
 # No blank lines allowed after function docstring
+    D203,
 # 1 blank line required before class docstring
+    D213
 # Multi-line docstring summary should start at the second line
 show-pep8 = True
 show-source = True
@@ -117,12 +118,12 @@ max-line-length = 120
 [pydocstyle]
 ignore =
     D401,
-    D202,
-    D203,
-    D213
 # First line should be in imperative mood; try rephrasing
+    D202,
 # No blank lines allowed after function docstring
+    D203,
 # 1 blank line required before class docstring
+    D213
 # Multi-line docstring summary should start at the second line
 
 [testenv:docs]