@Override
    public void visitPyImportStatement(@NotNull PyImportStatement node) {
      for (PyImportElement element : node.getImportElements()) {
        final PyReferenceExpression expr = element.getImportReferenceExpression();
        if (expr != null) {
          checkPackageNameInRequirements(expr);
        }
      }
    }
@Override
    public void visitPyImportStatement(@NotNull PyImportStatement node)