code: def is_ellipsis(node):
      """Tests whether node represents a Python ellipsis."""
      return isinstance(node, gast.Constant) and node.value == Ellipsis
  
file_path: DALI/dali/python/nvidia/dali/_autograph/pyct/gast_util.py
imports: import functools
  import gast
  from distutils.version import LooseVersion
label_desc: Use image node_id 4 for calling a global function with example usage: is_ellipsis(node) and returns: unknown