Update 03_Cross_Validation.ipynb

I could only run your code, if I add the labels from the training and validation data because when running the training loop we are also using the train_images that contain the images for training and validation.

Computer Vision/03_Cross_Validation.ipynb

@@ -810,6 +810,8 @@
         "train_labels = L()\n",
         "for i in range(len(dsrc.train)):\n",
         "  train_labels.append(dsrc.train[i][1])\n",
+        "for i in range(len(datasource.valid)):\n",
+        "  train_labels.append(datasource.valid[i][1])\n",
         "train_labels"
       ],
       "execution_count": 0,
@@ -1731,4 +1733,4 @@
       ]
     }
   ]
-}
+}