Disable too-few-public-methods for data classes. Close #3025

2 files changed, 17 insertions, 3 deletions

diff --git a/pylint/checkers/design_analysis.py b/pylint/checkers/design_analysis.py
index 62a718098..0cc5e5dd6 100644
--- a/pylint/checkers/design_analysis.py
+++ b/pylint/checkers/design_analysis.py
@@ -153,8 +153,9 @@ def _is_dataclass_like(node: astroid.ClassDef) -> bool:
             name = decorator.name
         else:
             name = decorator.attrname
-        if name in DATACLASSES_DECORATORS and root_locals.intersection(
-            DATACLASSES_DECORATORS
+        if name in DATACLASSES_DECORATORS and (
+            root_locals.intersection(DATACLASSES_DECORATORS)
+            or DATACLASS_IMPORT in root_locals
         ):
             return True
     return False
diff --git a/tests/functional/too/too_few_public_methods_37.py b/tests/functional/too/too_few_public_methods_37.py
index 0bb3a3c16..5e641f6cc 100644
--- a/tests/functional/too/too_few_public_methods_37.py
+++ b/tests/functional/too/too_few_public_methods_37.py
@@ -1,6 +1,6 @@
 # pylint: disable=missing-docstring
-import typing
 import dataclasses
+import typing
 from dataclasses import dataclass
 
 
@@ -22,3 +22,16 @@ class Test:
 
 class Example(typing.NamedTuple):
     some_int: int
+
+
+@dataclasses.dataclass(frozen=True)
+class Point:
+    """A three dimensional point with x, y and z components."""
+
+    x: float
+    y: float
+    z: float
+
+    def to_array(self):
+        """Convert to a NumPy array `np.array((x, y, z))`."""
+        return self.x