75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
"""
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Static List provider
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Provides lists as configured in config.json
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"""
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import logging
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from copy import deepcopy
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from typing import List
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from freqtrade.pairlist.IPairList import IPairList
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from freqtrade.resolvers import PairListResolver
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logger = logging.getLogger(__name__)
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class PairListManager():
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def __init__(self, exchange, config: dict) -> None:
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self._exchange = exchange
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self._config = config
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self._whitelist = self._config['exchange'].get('pair_whitelist')
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self._blacklist = self._config['exchange'].get('pair_blacklist', [])
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self._pairlists: List[IPairList] = []
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self._tickers_needed = False
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for pl in self._config.get('pairlists', [{'method': "StaticPairList"}]):
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pairl = PairListResolver(pl.get('method'),
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exchange, config,
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pl.get('config')).pairlist
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self._tickers_needed = pairl.needstickers or self._tickers_needed
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self._pairlists.append(pairl)
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@property
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def whitelist(self) -> List[str]:
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"""
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Has the current whitelist
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"""
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return self._whitelist
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@property
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def blacklist(self) -> List[str]:
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"""
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Has the current blacklist
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-> no need to overwrite in subclasses
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"""
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return self._blacklist
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def refresh_pairlist(self) -> None:
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"""
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Run pairlist through all pairlists.
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"""
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pairlist = self._whitelist.copy()
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# tickers should be cached to avoid calling the exchange on each call.
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tickers = []
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if self._tickers_needed:
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tickers = self._exchange.get_tickers()
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for pl in self._pairlists:
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pl.filter_pairlist(pairlist, tickers)
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# Validation against blacklist happens after the pairlists to ensure blacklist is respected.
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pairlist = self.verify_blacklist(pairlist, self.blacklist)
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self._whitelist = pairlist
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@staticmethod
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def verify_blacklist(pairlist: List[str], blacklist: List[str]) -> List[str]:
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for pair in deepcopy(pairlist):
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if pair in blacklist:
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logger.warning(f"Pair {pair} in your blacklist. Removing it from whitelist...")
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pairlist.remove(pair)
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return pairlist
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