pylint does not seem to respect custom isort sections

[webknjaz]

Steps to reproduce

I have third-parties divided into several sections in isort configuration like this:

# .isort.cfg
default_section = THIRDPARTY
known_frameworks = towncrier, sphinx
sections = STDLIB, TESTING, FRAMEWORKS, THIRDPARTY, FIRSTPARTY, LOCALFOLDER

And when I run pylint on a module that has

from towncrier._settings import load_config_from_file


try:
    from towncrier.build import find_fragments  # noqa: WPS433
except ImportError:
    from towncrier import find_fragments  # noqa: WPS433, WPS440

from docutils import statemachine

it complains that docutils import should be before that first towncrier import.

It seems like pylint does not understand that there are custom sections and tries to shove everything into third-party.

Side note: does pylint understand # isort: split? I guess not.

Current behavior

src/sphinxcontrib/towncrier/__init__.py:29:0: C0411: third party import "from docutils import statemachine" should be placed before "from towncrier._settings import load_config_from_file" (wrong-import-order)

Expected behavior

There should be no conflict with isort, hence no error

pylint --version output

pylint 2.6.0
astroid 2.4.2
Python 3.7.1 (default, Jan 28 2019, 08:25:13) 
[GCC 7.3.0]

[Pierre-Sassoulas]

pylint uses isort internally. If you're using isort with a proper configuration file yourself, you should probably disable wrong-import-order or other import messages in pylint, because pylint is bound to be lagging behind the features of isort, and because isort is already fixing import order automatically for you. See #3722, #3725 and in particular dbaty very detailed comment :

If you need something special, you need to disable the wrong-import-order check in pylint and run isort manually with a proper isort configuration file.

There is a discussion to propose default configuration for such cases in #3517 in order for this problem to not appear in the first place.