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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 include(self, target):
 """Includes target contents into config. :param str|unicode|Section|list target: File path or Section to include. """

        for target_ in listify(target):
            if isinstance(target_, Section):
                target_ = ':' + target_.name

            self._set('ini', target_, multi=True)

        return self