Update sklearn/covariance/_shrunk_covariance.py

raghuveerbhat · glemaitre · web-flow · commit 63cc0b6beae7 · 2022-11-17T11:50:15.000Z
Co-authored-by: Guillaume Lemaitre &lt;g.lemaitre58@gmail.com&gt;
diff --git a/sklearn/covariance/_shrunk_covariance.py b/sklearn/covariance/_shrunk_covariance.py
@@ -690,7 +690,7 @@ def fit(self, X, y=None):
         """
         self._validate_params()
 
-        X = self._validate_data(X)
+        X = self._validate_data(X, ensure_2d=False)
         if X.ndim == 1:
             X = np.reshape(X, (1, -1))
             warnings.warn(
