Forget to filter metaclass attributes by name while resolving class type member. This bug was introduced in PY-19702-related changes.

python/src/com/jetbrains/python/psi/types/PyClassTypeImpl.java

@@ -48,6 +48,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
+import java.util.stream.Collectors;
 
 /**
  * @author yole
@@ -310,8 +311,11 @@ public class PyClassTypeImpl extends UserDataHolderBase implements PyClassType {
       final List<PyTargetExpression> typeInstanceAttributes = ((PyClassType)typeType).getPyClass().getInstanceAttributes();
 
       if (!ContainerUtil.isEmpty(typeInstanceAttributes)) {
-        return ContainerUtil
-          .map(typeInstanceAttributes, member -> new RatedResolveResult(PyReferenceImpl.getRate(member, context), member));
+        return typeInstanceAttributes
+          .stream()
+          .filter(member -> name.equals(member.getName()))
+          .map(member -> new RatedResolveResult(PyReferenceImpl.getRate(member, context), member))
+          .collect(Collectors.toList());
       }
     }
 

python/testData/inspections/PyUnresolvedReferencesInspection3K/nonexistentMetaclassAttribute.py

@@ -0,0 +1,10 @@
+class Meta(type):
+    def __new__(cls, name, bases, attrs):
+        foo = "abc"
+
+
+class A(metaclass=Meta):
+    pass
+
+
+print(A().<warning descr="Unresolved attribute reference 'bar' for class 'A'">bar</warning>)

python/testSrc/com/jetbrains/python/inspections/Py3UnresolvedReferencesInspectionTest.java

@@ -100,6 +100,11 @@ public class Py3UnresolvedReferencesInspectionTest extends PyTestCase {
     doTest();
   }
 
+  // PY-19702
+  public void testNonexistentMetaclassAttribute() {
+    doTest();
+  }
+
   public void testMetaclassStub() {
     doMultiFileTest("a.py");
     final Project project = myFixture.getProject();