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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 _str_subgroups(self):
 """ renders subgroups to a list of strings """

        s = []

        i = 0

        # if there are any views, there must be a subGroup1 view View tag=val
        # as the first one.  So create it automatically here
        if len(self.views) > 0:
            mapping = dict((i.view, i.view) for i in self.views)
            view_subgroup = SubGroupDefinition(
                name='view',
                label='Views',
                mapping=mapping)
            i += 1
            s.append('subGroup%s %s' % (i, view_subgroup))

        for subgroup in self.subgroups.values():
            i += 1
            s.append('subGroup%s %s' % (i, subgroup))
        return s