[refactor] Create a file for the PassChecker in pylint.checker.base

pylint/checkers/base/__init__.py

@@ -17,6 +17,7 @@
 from pylint.checkers import utils
 from pylint.checkers.base.basic_checker import _BasicChecker
 from pylint.checkers.base.comparison_checker import ComparisonChecker
+from pylint.checkers.base.pass_checker import PassChecker
 from pylint.checkers.utils import (
     infer_all,
     is_overload_stub,
@@ -2311,26 +2312,6 @@ def _check_docstring(
             )
 
 
-class PassChecker(_BasicChecker):
-    """Check if the pass statement is really necessary."""
-
-    msgs = {
-        "W0107": (
-            "Unnecessary pass statement",
-            "unnecessary-pass",
-            'Used when a "pass" statement that can be avoided is encountered.',
-        )
-    }
-
-    @utils.check_messages("unnecessary-pass")
-    def visit_pass(self, node: nodes.Pass) -> None:
-        if len(node.parent.child_sequence(node)) > 1 or (
-            isinstance(node.parent, (nodes.ClassDef, nodes.FunctionDef))
-            and node.parent.doc_node
-        ):
-            self.add_message("unnecessary-pass", node=node)
-
-
 def _infer_dunder_doc_attribute(node):
     # Try to see if we have a `__doc__` attribute.
     try:

pylint/checkers/base/pass_checker.py

@@ -0,0 +1,28 @@
+# 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
+
+from astroid import nodes
+
+from pylint.checkers import utils
+from pylint.checkers.base.basic_checker import _BasicChecker
+
+
+class PassChecker(_BasicChecker):
+    """Check if the pass statement is really necessary."""
+
+    msgs = {
+        "W0107": (
+            "Unnecessary pass statement",
+            "unnecessary-pass",
+            'Used when a "pass" statement that can be avoided is encountered.',
+        )
+    }
+
+    @utils.check_messages("unnecessary-pass")
+    def visit_pass(self, node: nodes.Pass) -> None:
+        if len(node.parent.child_sequence(node)) > 1 or (
+            isinstance(node.parent, (nodes.ClassDef, nodes.FunctionDef))
+            and node.parent.doc_node
+        ):
+            self.add_message("unnecessary-pass", node=node)