a qualified reference is not a reference to an unqualified element with the same name (PY-939)

python/src/com/jetbrains/python/psi/impl/PyQualifiedReferenceImpl.java

@@ -134,7 +134,7 @@ public class PyQualifiedReferenceImpl extends PyReferenceImpl {
 
   @Override
   public boolean isReferenceTo(PsiElement element) {
-    if (super.isReferenceTo(element)) {
+    if (resolve() == element) {
       return true;
     }
     final String referencedName = myElement.getReferencedName();

python/testData/findUsages/QualifiedVsUnqualifiedUsages.py

@@ -0,0 +1,3 @@
+class Spam(object):
+    def eggs(self, parr<caret>ot):
+        self.parrot = parrot

python/testSrc/com/jetbrains/python/PyFindUsagesTest.java

@@ -28,4 +28,9 @@ public class PyFindUsagesTest extends PyLightFixtureTestCase {
     final Collection<UsageInfo> usages = myFixture.testFindUsages("findUsages/ImplicitlyResolvedUsages.py");
     assertEquals(1, usages.size());
   }
+
+  public void testQualifiedVsUnqualifiedUsages() {  // PY-939
+    final Collection<UsageInfo> usages = myFixture.testFindUsages("findUsages/QualifiedVsUnqualifiedUsages.py");
+    assertEquals(1, usages.size());
+  }
 }