Update perturbation_logic.py

codex/perturbation_logic.py

@@ -1 +1,20 @@
-print("Hello World")
+from __future__ import annotations
+
+import random
+from typing import Sequence, TypeVar
+
+T = TypeVar("T")
+
+
+def perturb_choice(items: Sequence[T], temperature: float = 0.3) -> T:
+    """
+    Return a 'noisy' choice from items.
+
+    A low temperature ≈ greedy; high temperature ≈ exploratory.
+    """
+    if not items:
+        raise ValueError("items cannot be empty")
+    if temperature <= 0:
+        return items[0]
+    idx = min(int(abs(random.gauss(0, temperature)) * len(items)), len(items) - 1)
+    return items[idx]