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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 params(self):
 """ Return a list of all of the ``Parameter`` objects. Or a just a single ``Parameter`` is there is only one, and single empty ``Parameter`` if there are no parameters. """

        paramlist = [b.params for b in self.bases if b.params.has_value]

        if len(paramlist) == 0:
            return Parameter()
        else:
            return paramlist if len(paramlist) > 1 else paramlist[0]