PY-13140 Underscored names are completed inside import statement

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

@@ -308,7 +308,7 @@ public class PyModuleType implements PyType { // Modules don't descend from obje
           return !(psiElement instanceof PyImportElement) ||
                  PsiTreeUtil.getParentOfType(psiElement, PyImportStatementBase.class) instanceof PyFromImportStatement;
         }
-      }, new PyUtil.UnderscoreFilter(0));
+      }, null);
       if (suppressParentheses) {
         processor.suppressParentheses();
       }

python/testData/completion/modulePrivateNamesCompletedInsideImport/a.py

@@ -0,0 +1 @@
+from module import <caret>

python/testData/completion/modulePrivateNamesCompletedInsideImport/module.py

@@ -0,0 +1,3 @@
+normal_name = 'foo'
+_private_name = 'bar'
+__magic_name__ = 'baz'

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

@@ -615,4 +615,15 @@ public class PythonCompletionTest extends PyTestCase {
                           "    __metaclass__ = \n");
 
   }
+
+  // PY-13140
+  public void testModulePrivateNamesCompletedInsideImport() {
+    //doMultiFileTest();
+    myFixture.copyDirectoryToProject("completion/" + getTestName(true), "");
+    myFixture.configureByFile("a.py");
+    myFixture.completeBasic();
+    List<String> suggested = myFixture.getLookupElementStrings();
+    assertNotNull(suggested);
+    assertContainsElements(suggested, "normal_name", "_private_name", "__magic_name__");
+  }
 }