def read_raw_header(self, height):
        try:
            with open(self.path, 'rb') as store:
                store.seek(height*80)
                data = store.read(80)
                assert len(data) == 80
                return data
        except (OSError, __HOLE__), e:
            return None
dataset/ETHPy150Open chromaway/ngcccbase/ngcccbase/blockchain.py/FileStore.read_raw_header