private boolean isAcceptableForImport(PsiFile existingImportFile, PsiFileSystemItem srcfile) {
    return srcfile != existingImportFile && srcfile != myNode.getContainingFile() &&
           (PyUtil.isRoot(srcfile) || PyNames.isIdentifier(FileUtilRt.getNameWithoutExtension(srcfile.getName()))) &&
           !isShadowedModule(srcfile);
  }
private boolean isAcceptableForImport(PsiFile existingImportFile, PsiFileSystemItem srcfile)