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Refactor verify_blacklist()

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This commit is contained in:
hroff-1902 2020-05-19 23:13:51 +03:00
parent d438af342c
commit e96e28df07
3 changed files with 23 additions and 30 deletions
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31
freqtrade/pairlist/IPairList.py
View File

@ -3,7 +3,6 @@ PairList Handler base class
"""
import logging
from abc import ABC, abstractmethod, abstractproperty
from copy import deepcopy
from typing import Any, Dict, List
from cachetools import TTLCache, cached
@ -87,38 +86,14 @@ class IPairList(ABC):
:return: new whitelist
"""
@staticmethod
def verify_blacklist(pairlist: List[str], blacklist: List[str],
aswarning: bool) -> List[str]:
"""
Verify and remove items from pairlist - returning a filtered pairlist.
Logs a warning or info depending on `aswarning`.
Pairlist Handlers explicitly using this method shall use `aswarning=False`!
:param pairlist: Pairlist to validate
:param blacklist: Blacklist to validate pairlist against
:param aswarning: Log message as Warning or Info
:return: pairlist - blacklisted pairs
"""
for pair in deepcopy(pairlist):
if pair in blacklist:
if aswarning:
logger.warning(f"Pair {pair} in your blacklist. Removing it from whitelist...")
else:
logger.info(f"Pair {pair} in your blacklist. Removing it from whitelist...")
pairlist.remove(pair)
return pairlist
def _verify_blacklist(self, pairlist: List[str], aswarning: bool = True) -> List[str]:
def verify_blacklist(self, pairlist: List[str]) -> List[str]:
"""
Proxy method to verify_blacklist for easy access for child classes.
Logs a warning or info depending on `aswarning`.
Pairlists explicitly using this method shall use aswarning=False!
Uses `aswarning=False`, as it should be for Pairlist Handlers.
:param pairlist: Pairlist to validate
:param aswarning: Log message as Warning or info.
:return: pairlist - blacklisted pairs
"""
return IPairList.verify_blacklist(pairlist, self._pairlistmanager.blacklist,
aswarning=aswarning)
return self._pairlistmanager.verify_blacklist(pairlist, aswarning=False)
def _whitelist_for_active_markets(self, pairlist: List[str]) -> List[str]:
"""

2
freqtrade/pairlist/VolumePairList.py
View File

@ -115,7 +115,7 @@ class VolumePairList(IPairList):
# Validate whitelist to only have active market pairs
pairs = self._whitelist_for_active_markets([s['symbol'] for s in sorted_tickers])
pairs = self._verify_blacklist(pairs, aswarning=False)
pairs = self.verify_blacklist(pairs)
# Limit pairlist to the requested number of pairs
pairs = pairs[:self._number_pairs]

20
freqtrade/pairlist/pairlistmanager.py
View File

@ -93,7 +93,7 @@ class PairListManager():
# Validation against blacklist happens after the chain of Pairlist Handlers
# to ensure blacklist is respected.
pairlist = IPairList.verify_blacklist(pairlist, self.blacklist, True)
pairlist = self.verify_blacklist(pairlist, True)
self._whitelist = pairlist
@ -110,6 +110,24 @@ class PairListManager():
return pairlist
def verify_blacklist(self, pairlist: List[str], aswarning: bool) -> List[str]:
"""
Verify and remove items from pairlist - returning a filtered pairlist.
Logs a warning or info depending on `aswarning`.
Pairlist Handlers explicitly using this method shall use `aswarning=False`!
:param pairlist: Pairlist to validate
:param aswarning: Log message as Warning or Info
:return: pairlist - blacklisted pairs
"""
for pair in deepcopy(pairlist):
if pair in self._blacklist:
if aswarning:
logger.warning(f"Pair {pair} in your blacklist. Removing it from whitelist...")
else:
logger.info(f"Pair {pair} in your blacklist. Removing it from whitelist...")
pairlist.remove(pair)
return pairlist
def create_pair_list(self, pairs: List[str], timeframe: str = None) -> ListPairsWithTimeframes:
"""
Create list of pair tuples with (pair, ticker_interval)