stable/freqtrade/optimize/edge_cli.py
2019-06-15 12:20:32 +02:00

79 lines
2.7 KiB
Python

# pragma pylint: disable=missing-docstring, W0212, too-many-arguments
"""
This module contains the edge backtesting interface
"""
import logging
from typing import Dict, Any
from tabulate import tabulate
from freqtrade import constants
from freqtrade.edge import Edge
from freqtrade.arguments import Arguments
from freqtrade.exchange import Exchange
from freqtrade.resolvers import StrategyResolver
logger = logging.getLogger(__name__)
class EdgeCli(object):
"""
EdgeCli class, this class contains all the logic to run edge backtesting
To run a edge backtest:
edge = EdgeCli(config)
edge.start()
"""
def __init__(self, config: Dict[str, Any]) -> None:
self.config = config
# Reset keys for edge
self.config['exchange']['key'] = ''
self.config['exchange']['secret'] = ''
self.config['exchange']['password'] = ''
self.config['exchange']['uid'] = ''
self.config['stake_amount'] = constants.UNLIMITED_STAKE_AMOUNT
self.config['dry_run'] = True
self.exchange = Exchange(self.config)
self.strategy = StrategyResolver(self.config).strategy
self.edge = Edge(config, self.exchange, self.strategy)
self.edge._refresh_pairs = self.config.get('refresh_pairs', False)
self.timerange = Arguments.parse_timerange(None if self.config.get(
'timerange') is None else str(self.config.get('timerange')))
self.edge._timerange = self.timerange
def _generate_edge_table(self, results: dict) -> str:
floatfmt = ('s', '.10g', '.2f', '.2f', '.2f', '.2f', 'd', '.d')
tabular_data = []
headers = ['pair', 'stoploss', 'win rate', 'risk reward ratio',
'required risk reward', 'expectancy', 'total number of trades',
'average duration (min)']
for result in results.items():
if result[1].nb_trades > 0:
tabular_data.append([
result[0],
result[1].stoploss,
result[1].winrate,
result[1].risk_reward_ratio,
result[1].required_risk_reward,
result[1].expectancy,
result[1].nb_trades,
round(result[1].avg_trade_duration)
])
# Ignore type as floatfmt does allow tuples but mypy does not know that
return tabulate(tabular_data, headers=headers, # type: ignore
floatfmt=floatfmt, tablefmt="pipe")
def start(self) -> None:
result = self.edge.calculate()
if result:
print('') # blank line for readability
print(self._generate_edge_table(self.edge._cached_pairs))