class_docstr: Quick check for Python features we know we don't support.
  
  Any features detected will cause AutoGraph to not compile a function.
code: def visit_Attribute(self, node):
      if (
          node.attr is not None
          and node.attr.startswith("__")
          and not node.attr.endswith("__")
      ):
          raise errors.UnsupportedLanguageElementError(
              "mangled names are not yet supported"
          )
      self.generic_visit(node)
  
file_path: tensorflow/tensorflow/python/autograph/core/unsupported_features_checker.py
imports: import gast
  from tensorflow.python.autograph.pyct import errors
label_desc: Use image node_id 1 for calling the UnsupportedFeaturesChecker obj's underlying member method code with example usage: obj.visit_Attribute(node) without return types