stable/freqtrade/pairlist/IPairList.py

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"""
Static List provider
Provides lists as configured in config.json
"""
import logging
from abc import ABC, abstractmethod
from typing import List
logger = logging.getLogger(__name__)
class IPairList(ABC):
def __init__(self, freqtrade, config: dict) -> None:
self._freqtrade = freqtrade
self._config = config
self._whitelist = self._config['exchange']['pair_whitelist']
self._blacklist = self._config['exchange'].get('pair_blacklist', [])
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self._markets = self._freqtrade.exchange.get_markets()
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@property
def name(self) -> str:
"""
Gets name of the class
-> no need to overwrite in subclasses
"""
return self.__class__.__name__
@property
def whitelist(self) -> List[str]:
"""
Has the current whitelist
-> no need to overwrite in subclasses
"""
return self._whitelist
@property
def blacklist(self) -> List[str]:
"""
Has the current blacklist
-> no need to overwrite in subclasses
"""
return self._blacklist
@abstractmethod
def short_desc(self) -> str:
"""
Short whitelist method description - used for startup-messages
-> Please overwrite in subclasses
"""
@abstractmethod
def refresh_pairlist(self) -> None:
"""
Refreshes pairlists and assigns them to self._whitelist and self._blacklist respectively
-> Please overwrite in subclasses
"""
def _validate_whitelist(self, whitelist: List[str]) -> List[str]:
"""
Check available markets and remove pair from whitelist if necessary
:param whitelist: the sorted list (based on BaseVolume) of pairs the user might want to
trade
:return: the list of pairs the user wants to trade without the one unavailable or
black_listed
"""
sanitized_whitelist = whitelist
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markets = self._freqtrade.exchange.get_markets()
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# Filter to markets in stake currency
markets = [m for m in markets if m['quote'] == self._config['stake_currency']]
known_pairs = set()
for market in markets:
pair = market['symbol']
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# pair is not in the generated dynamic market, or in the blacklist ... ignore it
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if pair not in whitelist or pair in self.blacklist:
continue
# else the pair is valid
known_pairs.add(pair)
# Market is not active
if not market['active']:
sanitized_whitelist.remove(pair)
logger.info(
'Ignoring %s from whitelist. Market is not active.',
pair
)
# We need to remove pairs that are unknown
return [x for x in sanitized_whitelist if x in known_pairs]