Automatically export hyperopt parameters

freqtrade/commands/arguments.py

@@ -29,7 +29,7 @@ ARGS_HYPEROPT = ARGS_COMMON_OPTIMIZE + ["hyperopt", "hyperopt_path",
                                         "epochs", "spaces", "print_all",
                                         "print_colorized", "print_json", "hyperopt_jobs",
                                         "hyperopt_random_state", "hyperopt_min_trades",
-                                        "hyperopt_loss"]
+                                        "hyperopt_loss", "disableparamexport"]
 
 ARGS_EDGE = ARGS_COMMON_OPTIMIZE + ["stoploss_range"]
 
@@ -85,7 +85,8 @@ ARGS_HYPEROPT_LIST = ["hyperopt_list_best", "hyperopt_list_profitable",
                       "hyperoptexportfilename", "export_csv"]
 
 ARGS_HYPEROPT_SHOW = ["hyperopt_list_best", "hyperopt_list_profitable", "hyperopt_show_index",
-                      "print_json", "hyperoptexportfilename", "hyperopt_show_no_header"]
+                      "print_json", "hyperoptexportfilename", "hyperopt_show_no_header",
+                      "disableparamexport"]
 
 NO_CONF_REQURIED = ["convert-data", "convert-trade-data", "download-data", "list-timeframes",
                     "list-markets", "list-pairs", "list-strategies", "list-data",

freqtrade/commands/cli_options.py

@@ -178,6 +178,11 @@ AVAILABLE_CLI_OPTIONS = {
         'Example: `--export-filename=user_data/backtest_results/backtest_today.json`',
         metavar='PATH',
     ),
+    "disableparamexport": Arg(
+        '--disable-param-export',
+        help="Disable automatic hyperopt parameter export.",
+        action='store_true',
+    ),
     "fee": Arg(
         '--fee',
         help='Specify fee ratio. Will be applied twice (on trade entry and exit).',

freqtrade/commands/hyperopt_commands.py

@@ -5,7 +5,6 @@ from typing import Any, Dict, List
 from colorama import init as colorama_init
 
 from freqtrade.configuration import setup_utils_configuration
-from freqtrade.constants import FTHYPT_FILEVERSION
 from freqtrade.data.btanalysis import get_latest_hyperopt_file
 from freqtrade.enums import RunMode
 from freqtrade.exceptions import OperationalException
@@ -134,14 +133,7 @@ def start_hyperopt_show(args: Dict[str, Any]) -> None:
             show_backtest_result(strategy_name, metrics,
                                  metrics['stake_currency'])
 
-            if val.get(FTHYPT_FILEVERSION, 1) >= 2:
-                # Export parameters ...
-                # TODO: make this optional? otherwise it'll overwrite previous parameters ...
-                fn = HyperoptTools.get_strategy_filename(config, strategy_name)
-                if fn:
-                    HyperoptTools.export_params(val, strategy_name, fn.with_suffix('.json'))
-                else:
-                    logger.warn("Strategy not found, not exporting parameter file.")
+            HyperoptTools.try_export_params(config, strategy_name, val)
 
         HyperoptTools.show_epoch_details(val, total_epochs, print_json, no_header,
                                          header_str="Epoch details")

freqtrade/configuration/configuration.py

@@ -260,6 +260,8 @@ class Configuration:
         self._args_to_config(config, argname='export',
                              logstring='Parameter --export detected: {} ...')
 
+        self._args_to_config(config, argname='disableparamexport',
+                             logstring='Parameter --disableparamexport detected: {} ...')
         # Edge section:
         if 'stoploss_range' in self.args and self.args["stoploss_range"]:
             txt_range = eval(self.args["stoploss_range"])

freqtrade/optimize/hyperopt.py

@@ -489,6 +489,11 @@ class Hyperopt:
                     f"saved to '{self.results_file}'.")
 
         if self.current_best_epoch:
+            HyperoptTools.try_export_params(
+                self.config,
+                self.backtesting.strategy.get_strategy_name(),
+                self.current_best_epoch)
+
             HyperoptTools.show_epoch_details(self.current_best_epoch, self.total_epochs,
                                              self.print_json)
         else:

freqtrade/optimize/hyperopt_tools.py

@@ -10,7 +10,7 @@ import tabulate
 from colorama import Fore, Style
 from pandas import isna, json_normalize
 
-from freqtrade.constants import USERPATH_STRATEGIES
+from freqtrade.constants import FTHYPT_FILEVERSION, USERPATH_STRATEGIES
 from freqtrade.exceptions import OperationalException
 from freqtrade.misc import deep_merge_dicts, round_coin_value, round_dict, safe_value_fallback2
 
@@ -52,6 +52,16 @@ class HyperoptTools():
         logger.info(f"Dumping parameters to {filename}")
         rapidjson.dump(final_params, filename.open('w'), indent=2)
 
+    @staticmethod
+    def try_export_params(config: Dict[str, Any], strategy_name: str, val: Dict):
+        if val.get(FTHYPT_FILEVERSION, 1) >= 2 and not config.get('disableparamexport', False):
+            # Export parameters ...
+            fn = HyperoptTools.get_strategy_filename(config, strategy_name)
+            if fn:
+                HyperoptTools.export_params(val, strategy_name, fn.with_suffix('.json'))
+            else:
+                logger.warn("Strategy not found, not exporting parameter file.")
+
     @staticmethod
     def has_space(config: Dict[str, Any], space: str) -> bool:
         """