def get_chunk(self, index):
        url = self.url_stem % "%s/chunk"
        data = json.dumps({
            'index': index,
        })
        req = urllib2.urlopen(urllib2.Request(url,
            data, {'Content-Type': 'application/json'}))
        return req.read().encode('hex')
dataset/ETHPy150Open chromaway/ngcccbase/ngcccbase/services/chroma.py/ChromaBlockchainState.get_chunk/swapped operands of `%`