fix: fixed suggestions

Satvik-Singh192 · Copilot · web-flow · commit c47b42d3bc0d · 2025-11-12T21:07:50.000+05:30
Co-authored-by: Copilot &lt;175728472+Copilot@users.noreply.github.com&gt;
diff --git a/src/quant_research_starter/tuning/optuna_runner.py b/src/quant_research_starter/tuning/optuna_runner.py
@@ -189,7 +189,7 @@ def objective(trial: Trial) -> float:
 
         signal_series = signals.mean(axis=1)
         signal_matrix = pd.DataFrame(
-            dict.fromkeys(prices.columns, signal_series), index=signal_series.index
+            {col: signal_series.copy() for col in prices.columns}, index=signal_series.index
         )
 
         common_dates = prices.index.intersection(signal_matrix.index)

Original file line number	Diff line number	Diff line change
`@@ -189,7 +189,7 @@ def objective(trial: Trial) -> float:`
`189`	`189`
`190`	`190`	`signal_series = signals.mean(axis=1)`
`191`	`191`	`signal_matrix = pd.DataFrame(`
`192`		`- dict.fromkeys(prices.columns, signal_series), index=signal_series.index`
	`192`	`+ {col: signal_series.copy() for col in prices.columns}, index=signal_series.index`
`193`	`193`	`)`
`194`	`194`
`195`	`195`	`common_dates = prices.index.intersection(signal_matrix.index)`