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41 lines
1.5 KiB
Python
41 lines
1.5 KiB
Python
import hashlib
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from copy import deepcopy
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from pathlib import Path
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from typing import Union
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import rapidjson
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def get_strategy_run_id(strategy) -> str:
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"""
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Generate unique identification hash for a backtest run. Identical config and strategy file will
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always return an identical hash.
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:param strategy: strategy object.
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:return: hex string id.
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"""
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digest = hashlib.sha1()
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config = deepcopy(strategy.config)
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# Options that have no impact on results of individual backtest.
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not_important_keys = ('strategy_list', 'original_config', 'telegram', 'api_server')
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for k in not_important_keys:
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if k in config:
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del config[k]
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# Explicitly allow NaN values (e.g. max_open_trades).
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# as it does not matter for getting the hash.
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digest.update(rapidjson.dumps(config, default=str,
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number_mode=rapidjson.NM_NAN).encode('utf-8'))
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# Include _ft_params_from_file - so changing parameter files cause cache eviction
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digest.update(rapidjson.dumps(
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strategy._ft_params_from_file, default=str, number_mode=rapidjson.NM_NAN).encode('utf-8'))
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with Path(strategy.__file__).open('rb') as fp:
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digest.update(fp.read())
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return digest.hexdigest().lower()
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def get_backtest_metadata_filename(filename: Union[Path, str]) -> Path:
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"""Return metadata filename for specified backtest results file."""
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filename = Path(filename)
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return filename.parent / Path(f'{filename.stem}.meta{filename.suffix}')
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