Don't highlight unused parameter in module __getattr__ (PY-28017)

python/src/com/jetbrains/python/inspections/PyUnusedLocalInspectionVisitor.java

@@ -15,6 +15,7 @@
  */
 package com.jetbrains.python.inspections;
 
+import com.google.common.collect.ImmutableMap;
 import com.intellij.codeInsight.controlflow.ControlFlowUtil;
 import com.intellij.codeInsight.controlflow.Instruction;
 import com.intellij.codeInspection.*;
@@ -193,9 +194,11 @@ public class PyUnusedLocalInspectionVisitor extends PyInspectionVisitor {
       final PyFunction function = (PyFunction)owner;
       final String functionName = function.getName();
 
-      return !PyNames.INIT.equals(functionName) &&
-             function.getContainingClass() != null &&
-             PyNames.getBuiltinMethods(LanguageLevel.forElement(function)).containsKey(functionName);
+      final LanguageLevel level = LanguageLevel.forElement(function);
+      final ImmutableMap<String, PyNames.BuiltinDescription> builtinMethods =
+        function.getContainingClass() != null ? PyNames.getBuiltinMethods(level) : PyNames.getModuleBuiltinMethods(level);
+
+      return !PyNames.INIT.equals(functionName) && builtinMethods.containsKey(functionName);
     }
 
     return false;

python/testData/inspections/PyUnusedLocalInspection/moduleGetAttr.py

@@ -0,0 +1,2 @@
+def __getattr__(name):
+    pass

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

@@ -96,6 +96,11 @@ public class PyUnusedLocalInspectionTest extends PyInspectionTestCase {
     doTest();
   }
 
+  // PY-28017
+  public void testModuleGetAttr() {
+    runWithLanguageLevel(LanguageLevel.PYTHON37, this::doTest);
+  }
+
   @NotNull
   @Override
   protected Class<? extends PyInspection> getInspectionClass() {