Add explicit type annotation for self.weights attribute

Copilot · vfdev-5 · Copilot · commit cfc8930d9ae2 · 2026-01-19T10:27:51.000Z
Co-authored-by: vfdev-5 &lt;2459423+vfdev-5@users.noreply.github.com&gt;
diff --git a/ignite/metrics/cohen_kappa.py b/ignite/metrics/cohen_kappa.py
@@ -69,7 +69,7 @@ def __init__(
             raise ValueError("Kappa Weighting type must be None or linear or quadratic.")
 
         # initalize weights
-        self.weights = weights
+        self.weights: Literal["linear", "quadratic"] | None = weights
 
         super(CohenKappa, self).__init__(
             self._cohen_kappa_score,
