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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 connect(self):
 """Authenticate to WOS and set the SID cookie."""

        if not self._SID:
            self._SID = self._auth.service.authenticate()
            print('Authenticated (SID: %s)' % self._SID)

        self._search.set_options(headers={'Cookie': 'SID="%s"' % self._SID})
        self._auth.options.headers.update({'Cookie': 'SID="%s"' % self._SID})
        return self._SID