[refactor] Create a file for _BasicChecker in pylint.checkers

pylint/checkers/base/__init__.py

@@ -12,9 +12,10 @@
 import astroid
 from astroid import nodes
 
-from pylint import checkers, constants, interfaces
+from pylint import constants, interfaces
 from pylint import utils as lint_utils
 from pylint.checkers import utils
+from pylint.checkers.base.basic_checker import _BasicChecker
 from pylint.checkers.utils import (
     infer_all,
     is_overload_stub,
@@ -398,11 +399,6 @@ def x(self, value): self._x = value
     return False
 
 
-class _BasicChecker(checkers.BaseChecker):
-    __implements__ = interfaces.IAstroidChecker
-    name = "basic"
-
-
 class BasicErrorChecker(_BasicChecker):
     msgs = {
         "E0100": (

pylint/checkers/base/basic_checker.py

@@ -0,0 +1,13 @@
+# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
+# Copyright (c) https://github.com/PyCQA/pylint/blob/main/CONTRIBUTORS.txt
+
+"""Permits separating multiple checks with the same checker name into classes/file."""
+
+from pylint.checkers import BaseChecker
+from pylint.interfaces import IAstroidChecker
+
+
+class _BasicChecker(BaseChecker):
+    __implements__ = IAstroidChecker
+    name = "basic"