code: def isbuiltin(f):
      """Returns True if the argument is a built-in function."""
      if any(
          f is builtin
          for builtin in six.moves.builtins.__dict__.values()
      ):
          return True
      elif isinstance(f, types.BuiltinFunctionType):
          return True
      elif inspect.isbuiltin(f):
          return True
      elif f is eval:
          return True
      else:
          return False
  
file_path: DALI/dali/python/nvidia/dali/_autograph/pyct/inspect_utils.py
imports: import inspect
  import itertools
  import linecache
  import sys
  import threading
  import types
  import six
label_desc: Use image node_id 3 for calling a global function with example usage: isbuiltin(f) and returns: True, True, True, True, False