def universe(context, today):
json_symbols = get_exchange_symbols('poloniex')
poloniex_universe_df = pd.DataFrame.from_dict(
json_symbols).transpose().astype(str)
poloniex_universe_df['base_currency'] = poloniex_universe_df.apply(
lambda row: row.symbol.split('_')[1],
axis=1)
poloniex_universe_df['market_currency'] = poloniex_universe_df.apply(
lambda row: row.symbol.split('_')[0],
axis=1)
poloniex_universe_df = poloniex_universe_df[
poloniex_universe_df['base_currency'] == context.base_currency]
poloniex_universe_df = poloniex_universe_df[
poloniex_universe_df.symbol != 'gas_btc']
# Markets currently not working on Catalyst 0.3.1
# 2017-01-01
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'bcn_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'burst_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'dgb_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'doge_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'emc2_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'pink_btc']
# poloniex_universe_df = poloniex_universe_df[poloniex_universe_df.symbol != 'sc_btc']
print(poloniex_universe_df.head())
date = str(today).split(' ')[0]
poloniex_universe_df = poloniex_universe_df[
poloniex_universe_df.start_date < date]
context.coins = symbols(*poloniex_universe_df.symbol)
print(len(poloniex_universe_df))
return poloniex_universe_df.symbol.tolist()
def fetch_symbol_map(self, is_local=False):
index = 1 if is_local else 0
if self._symbol_maps[index] is not None:
return self._symbol_maps[index]
else:
symbol_map = get_exchange_symbols(self.name, is_local)
self._symbol_maps[index] = symbol_map
return symbol_map
def universe(context, lookback_date, current_date):
json_symbols = get_exchange_symbols(
context.exchange) # get all the pairs for the exchange
universe_df = pd.DataFrame.from_dict(json_symbols).transpose().astype(
str) # convert into a dataframe
universe_df['base_currency'] = universe_df.apply(
lambda row: row.symbol.split('_')[1], axis=1)
universe_df['market_currency'] = universe_df.apply(
lambda row: row.symbol.split('_')[0], axis=1)
# Filter all the exchange pairs to only the ones for a give base currency
universe_df = universe_df[universe_df['base_currency'] ==
context.base_currency]
# Filter all the pairs to ensure that pair existed in the current date range
universe_df = universe_df[universe_df.start_date < lookback_date]
universe_df = universe_df[universe_df.end_daily >= current_date]
context.coins = symbols(
*universe_df.symbol) # convert all the pairs to symbols
return universe_df.symbol.tolist()
def fetch_symbol_map(self):
return get_exchange_symbols(self.name)
def fetch_symbol_map(self, is_local=False):
return get_exchange_symbols(self.name, is_local)