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")