stable/freqtrade/utils.py

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import logging
import sys
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from argparse import Namespace
from pathlib import Path
from typing import Any, Dict, List
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import arrow
from freqtrade.configuration import Configuration, TimeRange
from freqtrade.configuration.directory_operations import create_userdata_dir
from freqtrade.data.history import refresh_backtest_ohlcv_data
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from freqtrade.exchange import available_exchanges
from freqtrade.resolvers import ExchangeResolver
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from freqtrade.state import RunMode
logger = logging.getLogger(__name__)
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def setup_utils_configuration(args: Namespace, method: RunMode) -> Dict[str, Any]:
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"""
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Prepare the configuration for utils subcommands
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:param args: Cli args from Arguments()
:return: Configuration
"""
configuration = Configuration(args, method)
config = configuration.get_config()
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config['exchange']['dry_run'] = True
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# Ensure we do not use Exchange credentials
config['exchange']['key'] = ''
config['exchange']['secret'] = ''
return config
def start_list_exchanges(args: Namespace) -> None:
"""
Print available exchanges
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:param args: Cli args from Arguments()
:return: None
"""
if args.print_one_column:
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print('\n'.join(available_exchanges()))
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else:
print(f"Exchanges supported by ccxt and available for Freqtrade: "
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f"{', '.join(available_exchanges())}")
def start_create_userdir(args: Namespace) -> None:
"""
Create "user_data" directory to contain user data strategies, hyperopts, ...)
:param args: Cli args from Arguments()
:return: None
"""
if "user_data_dir" in args and args.user_data_dir:
create_userdata_dir(args.user_data_dir, create_dir=True)
else:
logger.warning("`create-userdir` requires --userdir to be set.")
sys.exit(1)
def start_download_data(args: Namespace) -> None:
"""
Download data (former download_backtest_data.py script)
"""
config = setup_utils_configuration(args, RunMode.OTHER)
timerange = TimeRange()
if 'days' in config:
time_since = arrow.utcnow().shift(days=-config['days']).strftime("%Y%m%d")
timerange = TimeRange.parse_timerange(f'{time_since}-')
dl_path = Path(config['datadir'])
logger.info(f'About to download pairs: {config["pairs"]}, '
f'intervals: {config["timeframes"]} to {dl_path}')
pairs_not_available: List[str] = []
try:
# Init exchange
exchange = ExchangeResolver(config['exchange']['name'], config).exchange
pairs_not_available = refresh_backtest_ohlcv_data(
exchange, pairs=config["pairs"], timeframes=config["timeframes"],
dl_path=Path(config['datadir']), timerange=timerange, erase=config.get("erase"))
except KeyboardInterrupt:
sys.exit("SIGINT received, aborting ...")
finally:
if pairs_not_available:
logger.info(f"Pairs [{','.join(pairs_not_available)}] not available "
f"on exchange {config['exchange']['name']}.")