void (@NotNull PsiElement element, @NotNull AnnotationHolder holder) { if (element instanceof PyFile pyFile) { final Project project = element.getProject(); final VirtualFile vFile = pyFile.getVirtualFile(); if (vFile != null && FileIndexFacade.getInstance(project).isInLibraryClasses(vFile)) { return; } final Boolean showingFlag = project.getUserData(DONT_SHOW_BALLOON); if (showingFlag != null && showingFlag.booleanValue()) { return; } if (!moduleUsesPythonSdk(pyFile)) { return; } final int inspectionVersion = getSettings(project).version; if (inspectionVersion < PyCompatibilityInspection.LATEST_INSPECTION_VERSION) { if (isCompatibilityInspectionEnabled(element)) { final LanguageLevel pyVersion = getLatestConfiguredCompatiblePython3Version(element); if (pyVersion != null && pyVersion.isOlderThan(LanguageLevel.getLatest())) { showStalePython3VersionWarning(pyFile, project, pyVersion); } } else if (containsFutureImports(pyFile)) { showSingletonNotification( project, PyBundle.message("python.compatibility.inspection.advertiser.using.future.imports.warning.message")); } else if (PyPsiUtils.containsImport(pyFile, "six")) { showSingletonNotification( project, PyBundle.message("python.compatibility.inspection.advertiser.using.six.warning.message")); } } } }