class_docstr: PEP 302 Loader that wraps Python's "classic" import algorithm
      
code: def get_data(self, pathname):
      with open(pathname, "rb") as file:
          return file.read()
  
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 3 for calling the ImpLoader obj's underlying member method code with example usage: obj.get_data(pathname) and returns: file