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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_lObj(self, lObj=None):
 """ Set the lObj attribute, storing objects the instance depends on For example: A Detect object depends on a vessel and some apertures That link between should be stored somewhere (for saving/loading). lObj does this: it stores the ID (as dict) of all objects depended on. Parameters lObj : None / dict / :class:`~tofu.pathfile.ID` / list of such Provide either: - A dict (derived from :meth:`~tofu.pathfile.ID._todict`) - A :class:`~tofu.pathfile.ID` instance - A list of dict or :class:`~tofu.pathfile.ID` instances """

        if self.lObj is None and lObj is not None:
            self._dall['lObj'] = {}
        if lObj is not None:
            if type(lObj) is not list:
                lObj = [lObj]
            for ii in range(0,len(lObj)):
                if type(lObj[ii]) is ID:
                    lObj[ii] = lObj[ii].to_dict()
            ClsU = list(set([oo['Cls'] for oo in lObj]))
            for c in ClsU:
                self._dall['lObj'][c] = [oo for oo in lObj if oo['Cls']==c]