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get_history_candles

To get history candles in __init__ function with past length of period data, which is useful for strategy to calculate parameter (ex. MA) without waiting several periods of trade() for collecting data. CA.get_history_candles can only be used in __init__, so it is necessary to save the history candles once queried.

Input​

  length: number;
  period: number;
  is_reverse: boolean = False;

Return​

  error: string;
  candles: dictionary;

Example​

get candles in chronological order​

def __init__(self):
    self.period = 60 * 60 # 1 hour
    self.subscribed_books = {}
    self.options = {}
    # query the past 1 day data
    self.history_candles = CA.get_history_candles(24, self.period)
    if self.history_candles:
        CA.log(str(self.history_candles))
        for exchange in self.history_candles:
            for pair in self.history_candles[exchange]:
                for candle in self.history_candles[exchange][pair]:
                    CA.log(str(candle))

get candles in reverse chronological order​

def __init__(self):
    self.period = 60 * 60 # 1 hour
    self.subscribed_books = {}
    self.options = {}
    # query the past 1 day data
    self.history_candles = CA.get_history_candles(24, self.period, True)
    if self.history_candles:
        CA.log(str(self.history_candles))
        for exchange in self.history_candles:
            for pair in self.history_candles[exchange]:
                for candle in self.history_candles[exchange][pair]:
                    CA.log(str(candle))