Update pandas_dataframe.ipynb

Author: MarkDaoust

site/en/tutorials/load_data/pandas_dataframe.ipynb

@@ -92,6 +92,7 @@
       },
       "outputs": [],
       "source": [
+        "import numpy as np\n",
         "import pandas as pd\n",
         "import tensorflow as tf\n",
         "\n",
@@ -292,7 +293,7 @@
       "outputs": [],
       "source": [
         "normalizer = tf.keras.layers.Normalization(axis=-1)\n",
-        "normalizer.adapt(numeric_features)"
+        "normalizer.adapt(np.array(numeric_features))"
       ]
     },
     {