code: def _test_bcolz_poloniex_daily_write_read(self):
      self.bcolz_exchange_daily_write_read("poloniex")
  
imports: import random
  import shutil
  import tempfile
  import pandas
  from nose.tools import assert_equals
  from catalyst.exchange.exchange_bcolz import BcolzExchangeBarWriter, BcolzExchangeBarReader
  from catalyst.exchange.exchange_bundle import ExchangeBundle
  from catalyst.exchange.utils.bundle_utils import get_df_from_arrays
label_desc: Use image node_id 11 for calling the TestBcolzWriter obj's underlying member method code with example usage: obj._test_bcolz_poloniex_daily_write_read() without return types