code: def load_source(name, pathname):
      
      if six.PY2:
          import imp
          return imp.load_source(name, pathname)
      else:
          loader = importlib.machinery.SourceFileLoader(name, pathname)
          return loader.load_module(name)
docs: This function provides the backward compatibility for 'imp.load_source'
      in Python 2.
  
      :param name: Name used to create or access a module object.
      :param pathname: Path pointing to the source file.
      :return: Loaded and initialized module.