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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 getParameters(self, contactItem):
 """ Return a list containing a single parameter suitable for changing the VIP status of a person. @type contactItem: L{_PersonVIPStatus} @rtype: C{list} of L{liveform.Parameter} """

        isVIP = False # default
        if contactItem is not None:
            isVIP = contactItem.person.vip
        return [liveform.Parameter(
            'vip', liveform.CHECKBOX_INPUT, bool, 'VIP', default=isVIP)]