diff --git a/tensorflow/python/autograph/g3doc/pyct_tutorial.ipynb b/tensorflow/python/autograph/g3doc/pyct_tutorial.ipynb
index 24862a8ce39..51abdf62396 100644
--- a/tensorflow/python/autograph/g3doc/pyct_tutorial.ipynb
+++ b/tensorflow/python/autograph/g3doc/pyct_tutorial.ipynb
@@ -153,7 +153,11 @@
         "id": "kuT7J-xps_2Y"
       },
       "source": [
-        "There are a couple of context objects that most transformer objects like `CodeGenerator` use:"
+        "There are a couple of context objects that most transformer objects like `CodeGenerator` use.\n",
+        "\n",
+        "Of note here is `EntityInfo.namespace`, which contains the runtime values for all the global and closure names that the function has access to. Inside a transformer object, this is available under `self.ctx.info.namespace`.\n",
+        "\n",
+        "For example, if a function uses NumPy, its namespace will typically include `'np'`."
       ]
     },
     {
@@ -166,12 +170,14 @@
       },
       "outputs": [],
       "source": [
+        "from tensorflow.python.autograph.pyct import inspect_utils\n",
+        "\n",
         "f_info = transformer.EntityInfo(\n",
         "    name='f',\n",
         "    source_code=source,\n",
         "    source_file=None,\n",
         "    future_features=(),\n",
-        "    namespace=None)\n",
+        "    namespace=inspect_utils.getnamespace(f))\n",
         "ctx = transformer.Context(f_info, None, None)"
       ]
     },