Introduce File versions to hyperopt result files

freqtrade/commands/hyperopt_commands.py

@@ -5,6 +5,7 @@ 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
@@ -133,13 +134,14 @@ def start_hyperopt_show(args: Dict[str, Any]) -> None:
             show_backtest_result(strategy_name, metrics,
                                  metrics['stake_currency'])
 
-            # 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.")
+            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.show_epoch_details(val, total_epochs, print_json, no_header,
                                          header_str="Epoch details")

freqtrade/constants.py

@@ -40,6 +40,7 @@ DEFAULT_DATAFRAME_COLUMNS = ['date', 'open', 'high', 'low', 'close', 'volume']
 DEFAULT_TRADES_COLUMNS = ['timestamp', 'id', 'type', 'side', 'price', 'amount', 'cost']
 
 LAST_BT_RESULT_FN = '.last_result.json'
+FTHYPT_FILEVERSION = 'fthypt_fileversion'
 
 USERPATH_HYPEROPTS = 'hyperopts'
 USERPATH_STRATEGIES = 'strategies'

freqtrade/optimize/hyperopt.py

@@ -20,7 +20,7 @@ from colorama import init as colorama_init
 from joblib import Parallel, cpu_count, delayed, dump, load, wrap_non_picklable_objects
 from pandas import DataFrame
 
-from freqtrade.constants import DATETIME_PRINT_FORMAT, LAST_BT_RESULT_FN
+from freqtrade.constants import DATETIME_PRINT_FORMAT, FTHYPT_FILEVERSION, LAST_BT_RESULT_FN
 from freqtrade.data.converter import trim_dataframes
 from freqtrade.data.history import get_timerange
 from freqtrade.misc import deep_merge_dicts, file_dump_json, plural
@@ -167,7 +167,7 @@ class Hyperopt:
             if isinstance(x, np.integer):
                 return int(x)
             return str(x)
-
+        epoch[FTHYPT_FILEVERSION] = 2
         with self.results_file.open('a') as f:
             rapidjson.dump(epoch, f, default=default_parser,
                            number_mode=rapidjson.NM_NATIVE | rapidjson.NM_NAN)

freqtrade/optimize/hyperopt_tools.py

@@ -46,7 +46,8 @@ class HyperoptTools():
         final_params = deep_merge_dicts(params['params_details'], final_params)
         final_params = {
             'strategy_name': strategy_name,
-            'params': final_params
+            'params': final_params,
+            'ft_stratparam_v': 1,
         }
         logger.info(f"Dumping parameters to {filename}")
         rapidjson.dump(final_params, filename.open('w'), indent=2)