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Cleanup pairlistmanager

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This commit is contained in:
hroff-1902 2020-05-17 14:10:11 +03:00
parent ce185a3b19
commit 97c50f86e9
1 changed files with 8 additions and 11 deletions
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17
freqtrade/pairlist/pairlistmanager.py
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@ -1,8 +1,5 @@
""" """
Static List provider PairList manager class
Provides lists as configured in config.json
""" """
import logging import logging
from copy import deepcopy from copy import deepcopy
@ -14,6 +11,7 @@ from freqtrade.exceptions import OperationalException
from freqtrade.pairlist.IPairList import IPairList from freqtrade.pairlist.IPairList import IPairList
from freqtrade.resolvers import PairListResolver from freqtrade.resolvers import PairListResolver
logger = logging.getLogger(__name__) logger = logging.getLogger(__name__)
@ -79,8 +77,7 @@ class PairListManager():
""" """
Run pairlist through all configured pairlists. Run pairlist through all configured pairlists.
""" """
# Tickers should be cached to avoid calling the exchange on each call.
# tickers should be cached to avoid calling the exchange on each call.
tickers: Dict = {} tickers: Dict = {}
if self._tickers_needed: if self._tickers_needed:
tickers = self._get_cached_tickers() tickers = self._get_cached_tickers()
@ -92,21 +89,21 @@ class PairListManager():
for pl in self._pairlists: for pl in self._pairlists:
pairlist = pl.filter_pairlist(pairlist, tickers) pairlist = pl.filter_pairlist(pairlist, tickers)
# Validation against blacklist happens after the pairlists to ensure blacklist is respected. # Validation against blacklist happens after the pairlists to ensure
# blacklist is respected.
pairlist = IPairList.verify_blacklist(pairlist, self.blacklist, True) pairlist = IPairList.verify_blacklist(pairlist, self.blacklist, True)
self._whitelist = pairlist self._whitelist = pairlist
def _prepare_whitelist(self, pairlist: List[str], tickers) -> List[str]: def _prepare_whitelist(self, pairlist: List[str], tickers) -> List[str]:
""" """
Prepare pairlist for Pairlist Filters that use tickers data - remove Prepare sanitized pairlist for Pairlist Filters that use tickers data - remove
pairs that do not have ticker available pairs that do not have ticker available
""" """
if self._tickers_needed: if self._tickers_needed:
# Copy list since we're modifying this list # Copy list since we're modifying this list
for p in deepcopy(pairlist): for p in deepcopy(pairlist):
ticker = tickers.get(p) if p not in tickers:
if not ticker:
pairlist.remove(p) pairlist.remove(p)
return pairlist return pairlist