diff --git a/docs/tutorials/barren_plateaus.ipynb b/docs/tutorials/barren_plateaus.ipynb
index 1ba2c491a..c8738a3af 100644
--- a/docs/tutorials/barren_plateaus.ipynb
+++ b/docs/tutorials/barren_plateaus.ipynb
@@ -117,8 +117,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/gradients.ipynb b/docs/tutorials/gradients.ipynb
index 3ec041f4f..5bc5829b8 100644
--- a/docs/tutorials/gradients.ipynb
+++ b/docs/tutorials/gradients.ipynb
@@ -119,8 +119,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/hello_many_worlds.ipynb b/docs/tutorials/hello_many_worlds.ipynb
index e33d07154..80b6f0e33 100644
--- a/docs/tutorials/hello_many_worlds.ipynb
+++ b/docs/tutorials/hello_many_worlds.ipynb
@@ -117,8 +117,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/mnist.ipynb b/docs/tutorials/mnist.ipynb
index f3974d15e..c0ad5984c 100644
--- a/docs/tutorials/mnist.ipynb
+++ b/docs/tutorials/mnist.ipynb
@@ -127,8 +127,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/noise.ipynb b/docs/tutorials/noise.ipynb
index 7feb9376a..1a4e71d74 100644
--- a/docs/tutorials/noise.ipynb
+++ b/docs/tutorials/noise.ipynb
@@ -105,8 +105,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/qcnn.ipynb b/docs/tutorials/qcnn.ipynb
index 430bae28c..d53493953 100644
--- a/docs/tutorials/qcnn.ipynb
+++ b/docs/tutorials/qcnn.ipynb
@@ -122,8 +122,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/quantum_data.ipynb b/docs/tutorials/quantum_data.ipynb
index 107405a0e..7288e1e08 100644
--- a/docs/tutorials/quantum_data.ipynb
+++ b/docs/tutorials/quantum_data.ipynb
@@ -119,8 +119,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
diff --git a/docs/tutorials/quantum_reinforcement_learning.ipynb b/docs/tutorials/quantum_reinforcement_learning.ipynb
index 523896611..09caf5aca 100644
--- a/docs/tutorials/quantum_reinforcement_learning.ipynb
+++ b/docs/tutorials/quantum_reinforcement_learning.ipynb
@@ -136,8 +136,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },
@@ -1493,7 +1494,9 @@
     "    episode_reward_history.append(episode_reward)\n",
     "    if (episode + 1) % 10 == 0:\n",
     "        avg_rewards = np.mean(episode_reward_history[-10:])\n",
-    "        print(f\"Episode {episode + 1}/{n_episodes}, average last 10 rewards {avg_rewards}\")\n",
+    "        print(\n",
+    "            f\"Episode {episode + 1}/{n_episodes}, average last 10 rewards {avg_rewards}\"\n",
+    "        )\n",
     "        if avg_rewards >= 500.0:\n",
     "            break"
    ]
diff --git a/docs/tutorials/research_tools.ipynb b/docs/tutorials/research_tools.ipynb
index fbe8b6ac1..7aa665e2e 100644
--- a/docs/tutorials/research_tools.ipynb
+++ b/docs/tutorials/research_tools.ipynb
@@ -112,8 +112,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "import os\n",
+    "\n",
+    "# Keras 2 must be selected before importing TensorFlow or TensorFlow Quantum:\n",
     "os.environ[\"TF_USE_LEGACY_KERAS\"] = \"1\""
    ]
   },