python · hauntsaninja · Sep 23, 2020 · Sep 23, 2020
diff --git a/mypy/checkmember.py b/mypy/checkmember.py
@@ -553,8 +553,7 @@ def analyze_var(name: str,
            return mx.chk.handle_partial_var_type(typ, mx.is_lvalue, var, mx.context)
        if mx.is_lvalue and var.is_property and not var.is_settable_property:
            # TODO allow setting attributes in subclass (although it is probably an error)
-            if info.get('__setattr__') is None:
-                mx.msg.read_only_property(name, itype.type, mx.context)
+            mx.msg.read_only_property(name, itype.type, mx.context)
        if mx.is_lvalue and var.is_classvar:
            mx.msg.cant_assign_to_classvar(name, mx.context)
        t = get_proper_type(expand_type_by_instance(typ, itype))
@@ -564,8 +563,7 @@ def analyze_var(name: str,
            if mx.is_lvalue:
                if var.is_property:
                    if not var.is_settable_property:
-                        if info.get('__setattr__') is None:
-                            mx.msg.read_only_property(name, itype.type, mx.context)
+                        mx.msg.read_only_property(name, itype.type, mx.context)
                else:
                    mx.msg.cant_assign_to_method(mx.context)


diff --git a/mypy/test/testcheck.py b/mypy/test/testcheck.py
@@ -90,7 +90,6 @@
    'check-reports.test',
    'check-errorcodes.test',
    'check-annotated.test',
-    'check-setattr.test',
    'check-parameter-specification.test',
 ]


diff --git a/test-data/unit/check-setattr.test b/test-data/unit/check-setattr.test