Add fixes for comments in the review

freqtrade/optimize/hyperopt.py

@@ -22,6 +22,7 @@ from pandas import DataFrame
 from skopt import Optimizer
 from skopt.space import Dimension
 
+from freqtrade import OperationalException
 from freqtrade.data.history import get_timeframe, trim_dataframe
 from freqtrade.misc import plural, round_dict
 from freqtrade.optimize.backtesting import Backtesting
@@ -181,7 +182,7 @@ class Hyperopt:
 
         return result
 
-    @staticmethod  # noqa: C901
+    @staticmethod
     def print_epoch_details(results, total_epochs, print_json: bool,
                             no_header: bool = False, header_str: str = None) -> None:
         """
@@ -462,6 +463,10 @@ class Hyperopt:
         trials: List = []
         if trials_file.is_file() and trials_file.stat().st_size > 0:
             trials = Hyperopt._read_trials(trials_file)
+            if trials[0].get('is_best') is None:
+                raise OperationalException(
+                        "The file with Hyperopt results is incompatible with this version "
+                        "of Freqtrade and cannot be loaded.")
             logger.info(f"Loaded {len(trials)} previous evaluations from disk.")
         return trials
 

freqtrade/utils.py

@@ -360,6 +360,7 @@ def start_test_pairlist(args: Dict[str, Any]) -> None:
 
 def start_hyperopt_list(args: Dict[str, Any]) -> None:
     """
+    List hyperopt epochs previously evaluated
     """
     from freqtrade.optimize.hyperopt import Hyperopt
 
@@ -403,6 +404,7 @@ def start_hyperopt_list(args: Dict[str, Any]) -> None:
 
 def start_hyperopt_show(args: Dict[str, Any]) -> None:
     """
+    Show details of a hyperopt epoch previously evaluated
     """
     from freqtrade.optimize.hyperopt import Hyperopt