class_docstr: PEP 302 Loader that wraps Python's "classic" import algorithm
      
code: def is_package(self, fullname):
      fullname = self._fix_name(fullname)
      return self.etc[2] == imp.PKG_DIRECTORY
  
imports: from collections import namedtuple
  from functools import singledispatch
  import importlib
  import importlib.util
  import importlib.machinery
  import os
  import os.path
  import sys
  from types import ModuleType
  import warnings
label_desc: Use image node_id 6 for calling the ImpLoader obj's underlying member method code with example usage: obj.is_package(fullname) and returns: unknown