def _appengine_fetch(self, uri, params, method):
        if method == 'GET':
            uri = self._build_get_uri(uri, params)

        try:
            httpmethod = getattr(urlfetch, method)
        except AttributeError:
            raise NotImplementedError(
                "Google App Engine does not support method '%s'" % method)

        authstring = base64.encodestring('%s:%s' + (self.auth_id, self.auth_token))
        authstring = authstring.replace('\n', '')
        r = urlfetch.fetch(url=uri, payload=urllib.urlencode(params),
            method=httpmethod,
            headers={'Content-Type': 'application/x-www-form-urlencoded',
                'Authorization': 'Basic %s' % authstring})
        if r.status_code >= 300:
            raise HTTPErrorAppEngine("HTTP %s: %s" % \
                (r.status_code, r.content))
        return r.content
dataset/ETHPy150Open plivo/plivohelper-python/plivohelper.py/REST._appengine_fetch/operator `%` -> `+`