How to use the saspy.sas_magic.SASMagic function in saspy

def isnotebook():
    try:
        shell = get_ipython().__class__.__name__
        if shell == 'ZMQInteractiveShell':
            return True   # Jupyter notebook or qtconsole
        elif shell == 'TerminalInteractiveShell':
            return False  # Terminal running IPython
        else:
            return False  # Other type (?)
    except NameError:
        return False      # Probably standard Python interpreter

if isnotebook():
    from saspy.sas_magic import SASMagic
    get_ipython().register_magics(SASMagic)

def _find_cfg():
   sp    = []
   sp[:] = sys.path
   sp[0] = os.path.abspath(sp[0])
   sp.insert(1, os.path.expanduser('~/.config/saspy'))
   sp.insert(0, __file__.rsplit(os.sep+'__init__.py')[0])

   cfg = 'Not found'

   for dir in sp:
      f1 = dir+os.sep+'sascfg_personal.py'
      if os.path.isfile(f1):
         cfg = f1
         break

def __init__(self, shell):
        super(SASMagic, self).__init__(shell)
        self.lst_len = -99  # initialize the length to a negative number to trigger function
        self.mva = None
        if self.lst_len < 0 and isinstance(self.mva, SASsession) :
            self._get_lst_len()

def load_ipython_extension(ipython):
    """Load the extension in Jupyter"""
    ipython.register_magics(SASMagic)