使用Enigma Catalyst检索Bittrex交换的分钟频率数据时出错

Question

我正在尝试使用Enigma Catalyst库从Bittrex exchange获取货币对ltc_btc的分钟数据：

在CLI中：

$ catalyst ingest-exchange -x bittrex -f minute -i ltc_btc

得到：

  File "/Users/cyrusghazanfar/Desktop/python-projects/catalyst/catalyst/__main__.py", line 545, in ingest_exchange
    csv=csv
  File "/Users/cyrusghazanfar/Desktop/python-projects/catalyst/catalyst/exchange/exchange_bundle.py", line 820, in ingest
    show_report=show_report
  File "/Users/cyrusghazanfar/Desktop/python-projects/catalyst/catalyst/exchange/exchange_bundle.py", line 596, in ingest_assets
    end_dt=end_dt
  File "/Users/cyrusghazanfar/Desktop/python-projects/catalyst/catalyst/exchange/exchange_bundle.py", line 509, in prepare_chunks
    start_dt, end_dt, [asset], data_frequency
  File "/Users/cyrusghazanfar/Desktop/python-projects/catalyst/catalyst/exchange/exchange_bundle.py", line 469, in get_adj_dates
    if data_frequency == 'minute' else last_entry
AttributeError: 'NoneType' object has no attribute 'replace'

问题似乎来自于交易的特定资产，谁的end_minute设置为'N/A‘，导致end和last_entry的 exchange_bundle.py#L467为空。

错误是来自丢失的分钟烛台数据，还是Bittrex没有通过其api提供分钟数据(但如果是梯子的话，Catalyst可以从检索到的所有数据构建分钟烛台)

Answer 1

目前还没有针对Bittrex的分钟包。https://github.com/enigmampc/catalyst/issues/90

我更喜欢的方法是在poloniex中运行backtest，然后在bittrex中执行实时交易。不过，并不是所有的配对都可用。