fixes

Signed-off-by: Wenqi Li <[email protected]>

Author: wyli

deep_atlas/deep_atlas_tutorial.ipynb

@@ -2436,7 +2436,7 @@
     "            seg2 = seg2_predicted  # Use this in anatomy loss\n",
     "\n",
     "        else:  # seg2 available, but no seg1\n",
-    "            assert('seg2' in batch.keys())\n",
+    "            assert 'seg2' in batch.keys()\n",
     "            seg2 = monai.networks.one_hot(batch['seg2'].to(device), num_segmentation_classes)\n",
     "            loss_metric = dice_loss2(seg2_predicted, seg2)\n",
     "            loss_supervised = loss_metric\n",