Merge pull request hummingbot#7530 from mr-pascal/fix/division-by-zero

fix(): Potential Division by Zero

Author: cardosofede

hummingbot/strategy_v2/backtesting/backtesting_engine_base.py

@@ -265,7 +265,7 @@ def summarize_results(executors_info: List, total_amount_quote: float = 1000):
             total_positions = executors_with_position.shape[0]
             win_signals = executors_with_position[executors_with_position["net_pnl_quote"] > 0]
             loss_signals = executors_with_position[executors_with_position["net_pnl_quote"] < 0]
-            accuracy = win_signals.shape[0] / total_positions
+            accuracy = (win_signals.shape[0] / total_positions) if total_positions else 0.0
             cumulative_returns = executors_with_position["net_pnl_quote"].cumsum()
             executors_with_position["cumulative_returns"] = cumulative_returns
             executors_with_position["cumulative_volume"] = executors_with_position["filled_amount_quote"].cumsum()