Fixed IntellijIdeaRulezzz in completion of qualified references in target expressions (PY-6829)

python/src/com/jetbrains/python/psi/impl/references/PyQualifiedReference.java

@@ -253,6 +253,10 @@ public class PyQualifiedReference extends PyReferenceImpl {
       if (qualifier instanceof PyQualifiedExpression) {
         Collection<PyExpression> attrs = collectAssignedAttributes((PyQualifiedExpression)qualifier);
         for (PyExpression ex : attrs) {
+          final String name = ex.getName();
+          if (name != null && name.endsWith(CompletionUtil.DUMMY_IDENTIFIER_TRIMMED)) {
+            continue;
+          }
           if (ex instanceof PsiNamedElement && qualifierType instanceof PyClassType) {
             variants.add(LookupElementBuilder.create((PsiNamedElement)ex)
                            .withTypeText(qualifierType.getName())

python/testData/completion/fakeNameInQualifiedReference.after.py

@@ -0,0 +1,2 @@
+foo = dict()
+foo.Intelli = 2

python/testData/completion/fakeNameInQualifiedReference.py

@@ -0,0 +1,2 @@
+foo = dict()
+foo.Intelli<caret> = 2

python/testSrc/com/jetbrains/python/PythonCompletionTest.java

@@ -568,4 +568,9 @@ public class PythonCompletionTest extends PyTestCase {
   public void testFromNamespacePackageImport() {
     doMultiFileTest();
   }
+
+  // PY-6829
+  public void testFakeNameInQualifiedReference() {
+    doTest();
+  }
 }