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