153 lines
5.0 KiB
Python
153 lines
5.0 KiB
Python
# pragma pylint: disable=attribute-defined-outside-init
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"""
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This module load custom hyperopts
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"""
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import importlib
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import os
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import sys
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from typing import Dict, Any, Callable
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from pandas import DataFrame
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from freqtrade.constants import Constants
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from freqtrade.logger import Logger
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from freqtrade.optimize.interface import IHyperOpt
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sys.path.insert(0, r'../../user_data/hyperopts')
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class CustomHyperOpt(object):
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"""
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This class contains all the logic to load custom hyperopt class
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"""
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def __init__(self, config: dict = {}) -> None:
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"""
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Load the custom class from config parameter
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:param config:
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:return:
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"""
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self.logger = Logger(name=__name__).get_logger()
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# Verify the hyperopt is in the configuration, otherwise fallback to the default hyperopt
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if 'hyperopt' in config:
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hyperopt = config['hyperopt']
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else:
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hyperopt = Constants.DEFAULT_HYPEROPT
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# Load the hyperopt
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self._load_hyperopt(hyperopt)
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def _load_hyperopt(self, hyperopt_name: str) -> None:
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"""
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Search and load the custom hyperopt. If no hyperopt found, fallback on the default hyperopt
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Set the object into self.custom_hyperopt
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:param hyperopt_name: name of the module to import
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:return: None
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"""
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try:
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# Start by sanitizing the file name (remove any extensions)
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hyperopt_name = self._sanitize_module_name(filename=hyperopt_name)
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# Search where can be the hyperopt file
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path = self._search_hyperopt(filename=hyperopt_name)
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# Load the hyperopt
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self.custom_hyperopt = self._load_class(path + hyperopt_name)
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# Fallback to the default hyperopt
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except (ImportError, TypeError) as error:
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self.logger.error(
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"Impossible to load Hyperopt 'user_data/hyperopts/%s.py'. This file does not exist"
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" or contains Python code errors",
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hyperopt_name
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)
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self.logger.error(
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"The error is:\n%s.",
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error
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)
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def _load_class(self, filename: str) -> IHyperOpt:
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"""
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Import a hyperopt as a module
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:param filename: path to the hyperopt (path from freqtrade/optimize/)
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:return: return the hyperopt class
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"""
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module = importlib.import_module(filename, __package__)
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custom_hyperopt = getattr(module, module.class_name)
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self.logger.info("Load hyperopt class: %s (%s.py)", module.class_name, filename)
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return custom_hyperopt()
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@staticmethod
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def _sanitize_module_name(filename: str) -> str:
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"""
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Remove any extension from filename
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:param filename: filename to sanatize
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:return: return the filename without extensions
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"""
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filename = os.path.basename(filename)
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filename = os.path.splitext(filename)[0]
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return filename
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@staticmethod
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def _search_hyperopt(filename: str) -> str:
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"""
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Search for the hyperopt file in different folder
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1. search into the user_data/hyperopts folder
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2. search into the freqtrade/optimize folder
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3. if nothing found, return None
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:param hyperopt_name: module name to search
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:return: module path where is the hyperopt
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"""
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pwd = os.path.dirname(os.path.realpath(__file__)) + '/'
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user_data = os.path.join(pwd, '..', '..', 'user_data', 'hyperopts', filename + '.py')
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hyperopt_folder = os.path.join(pwd, filename + '.py')
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path = None
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if os.path.isfile(user_data):
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path = 'user_data.hyperopts.'
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elif os.path.isfile(hyperopt_folder):
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path = '.'
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return path
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def populate_indicators(self, dataframe: DataFrame) -> DataFrame:
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"""
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Populate indicators that will be used in the Buy and Sell hyperopt
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:param dataframe: Raw data from the exchange and parsed by parse_ticker_dataframe()
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:return: a Dataframe with all mandatory indicators for the strategies
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"""
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return self.custom_hyperopt.populate_indicators(dataframe)
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def buy_strategy_generator(self, params: Dict[str, Any]) -> Callable:
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"""
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Create a buy strategy generator
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"""
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return self.custom_hyperopt.buy_strategy_generator(params)
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def indicator_space(self) -> Dict[str, Any]:
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"""
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Create an indicator space
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"""
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return self.custom_hyperopt.indicator_space()
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def generate_roi_table(self, params: Dict) -> Dict[int, float]:
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"""
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Create an roi table
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"""
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return self.custom_hyperopt.generate_roi_table(params)
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def stoploss_space(self) -> Dict[str, Any]:
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"""
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Create a stoploss space
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"""
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return self.custom_hyperopt.stoploss_space()
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def roi_space(self) -> Dict[str, Any]:
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"""
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Create a roi space
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"""
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return self.custom_hyperopt.roi_space()
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