removed prints for strategy could not be loaded

Changed logic to contain much less if conditions

currently still missing:
Webhook terminology, Telegram notification settings, Strategy/Config settings

freqtrade/commands/strategy_utils_commands.py

@@ -1,4 +1,5 @@
 import logging
+import time
 from typing import Any, Dict
 
 from freqtrade.configuration import setup_utils_configuration
@@ -33,4 +34,7 @@ def start_strategy_update(args: Dict[str, Any]) -> None:
 
     for filtered_strategy_obj in filtered_strategy_objs:
         instance_strategy_updater = StrategyUpdater()
+        start = time.perf_counter()
         instance_strategy_updater.start(config, filtered_strategy_obj)
+        elapsed = time.perf_counter() - start
+        print(f"Conversion of {filtered_strategy_obj['name']} took {elapsed:.1f} seconds.")

freqtrade/strategy/strategyupdater.py

@@ -52,7 +52,6 @@ class StrategyUpdater:
         """
 
         source_file = strategy_obj['location']
-        print(f"started conversion of {source_file}")
         strategies_backup_folder = Path.joinpath(config['user_data_dir'], "strategies_orig_updater")
         target_file = Path.joinpath(strategies_backup_folder, strategy_obj['location_rel'])
 
@@ -73,7 +72,6 @@ class StrategyUpdater:
         # write the modified code to the destination folder
         with open(source_file, 'w') as f:
             f.write(new_code)
-        print(f"conversion of file {source_file} successful.")
 
     # define the function to update the code
     def update_code(self, code):
@@ -81,7 +79,7 @@ class StrategyUpdater:
         tree = ast.parse(code)
 
         # use the AST to update the code
-        updated_code = self.modify_ast(self, tree)
+        updated_code = self.modify_ast(tree)
 
         # return the modified code without executing it
         return updated_code
@@ -96,6 +94,7 @@ class StrategyUpdater:
         ast.increment_lineno(tree, n=1)
 
         # generate the new code from the updated AST
+        # without indent {} parameters would just be written straight one after the other.
         return astor.to_source(tree)
 
 
@@ -131,8 +130,9 @@ class NameUpdater(ast.NodeTransformer):
         return node
 
     def visit_Expr(self, node):
-        node.value.left.id = self.check_dict(StrategyUpdater.name_mapping, node.value.left.id)
-        self.visit(node.value)
+        if hasattr(node.value, "left") and hasattr(node.value.left, "id"):
+            node.value.left.id = self.check_dict(StrategyUpdater.name_mapping, node.value.left.id)
+            self.visit(node.value)
         return node
 
     # Renames an element if contained inside a dictionary.

tests/test_strategy_updater.py

@@ -4,7 +4,8 @@ from freqtrade.strategy.strategyupdater import StrategyUpdater
 
 
 def test_strategy_updater(default_conf, caplog) -> None:
-    modified_code1 = StrategyUpdater.update_code(StrategyUpdater, """
+    instance_strategy_updater = StrategyUpdater()
+    modified_code1 = instance_strategy_updater.update_code("""
 class testClass(IStrategy):
     def populate_buy_trend():
         pass
@@ -17,27 +18,27 @@ class testClass(IStrategy):
     def custom_sell():
         pass
 """)
-    modified_code2 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code2 = instance_strategy_updater.update_code("""
 ticker_interval = '15m'
 buy_some_parameter = IntParameter(space='buy')
 sell_some_parameter = IntParameter(space='sell')
 """)
-    modified_code3 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code3 = instance_strategy_updater.update_code("""
 use_sell_signal = True
 sell_profit_only = True
 sell_profit_offset = True
 ignore_roi_if_buy_signal = True
 forcebuy_enable = True
 """)
-    modified_code4 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code4 = instance_strategy_updater.update_code("""
 dataframe.loc[reduce(lambda x, y: x & y, conditions), ["buy", "buy_tag"]] = (1, "buy_signal_1")
 dataframe.loc[reduce(lambda x, y: x & y, conditions), 'sell'] = 1
 """)
-    modified_code5 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code5 = instance_strategy_updater.update_code("""
 def confirm_trade_exit(sell_reason: str):
     pass
     """)
-    modified_code6 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code6 = instance_strategy_updater.update_code("""
 order_time_in_force = {
     'buy': 'gtc',
     'sell': 'ioc'
@@ -54,12 +55,12 @@ unfilledtimeout = {
 }
 """)
 
-    modified_code7 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code7 = instance_strategy_updater.update_code("""
 def confirm_trade_exit(sell_reason):
     if (sell_reason == 'stop_loss'):
         pass
 """)
-    modified_code8 = StrategyUpdater.update_code(StrategyUpdater, """
+    modified_code8 = instance_strategy_updater.update_code("""
 sell_reason == 'sell_signal'
 sell_reason == 'force_sell'
 sell_reason == 'emergency_sell'