allow decorated and subclasses

crates/ruff_linter/resources/test/fixtures/pylint/too_few_public_methods.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from dataclasses import dataclass
+
 
 class Point:  # PLR0903
     def __init__(self, x: float, y: float) -> None:
@@ -13,3 +15,16 @@ def __init__(self, top_left: Point, bottom_right: Point) -> None:
 
     def area(self) -> float:
         ...
+
+
+@dataclass
+class Circle:  # OK
+    center: Point
+    radius: float
+
+    def area(self) -> float:
+        ...
+
+
+class CustomException(Exception):  # OK
+    ...

crates/ruff_linter/src/rules/pylint/rules/too_few_public_methods.rs

@@ -61,6 +61,16 @@ pub(crate) fn too_few_public_methods(
     class_def: &ast::StmtClassDef,
     min_methods: usize,
 ) {
+    // allow decorated classes
+    if !class_def.decorator_list.is_empty() {
+        return;
+    }
+
+    // allow classes with base classes
+    if class_def.arguments.is_some() {
+        return;
+    }
+
     let methods = class_def
         .body
         .iter()

crates/ruff_linter/src/rules/pylint/snapshots/ruff_linter__rules__pylint__tests__too_few_public_methods.snap

@@ -1,12 +1,12 @@
 ---
 source: crates/ruff_linter/src/rules/pylint/mod.rs
 ---
-too_few_public_methods.py:4:1: PLR0903 Too few public methods (1 < 2)
+too_few_public_methods.py:6:1: PLR0903 Too few public methods (1 < 2)
   |
-4 | / class Point:  # PLR0903
-5 | |     def __init__(self, x: float, y: float) -> None:
-6 | |         self.x = x
-7 | |         self.y = y
+6 | / class Point:  # PLR0903
+7 | |     def __init__(self, x: float, y: float) -> None:
+8 | |         self.x = x
+9 | |         self.y = y
   | |__________________^ PLR0903
   |