do not set blank lines

.vscode/settings.json

@@ -6,7 +6,7 @@
   "[python]": {
     "editor.defaultFormatter": "ms-python.python"
   },
-  "python.formatting.autopep8Args": ["--max-line-length", "120"],
+  "python.formatting.autopep8Args": ["--max-line-length", "120", "--ignore", "E305,E302"],
   "python.testing.pytestArgs": ["."],
   "python.testing.unittestEnabled": false,
   "python.testing.nosetestsEnabled": false,