fix standalone execution text2image genai (#2665)

Author: eaidova

notebooks/text-to-image-genai/text-to-image-genai.ipynb

@@ -56,6 +56,7 @@
    "source": [
     "import platform\n",
     "import requests\n",
+    "from pathlib import Path\n",
     "\n",
     "\n",
     "%pip install -q \"git+https://github.com/huggingface/optimum-intel.git\"\n",
@@ -65,15 +66,19 @@
     "if platform.system() == \"Darwin\":\n",
     "    %pip install -q \"numpy<2.0.0\"\n",
     "\n",
-    "r = requests.get(\n",
-    "    url=\"https://raw.githubusercontent.com/openvinotoolkit/openvino_notebooks/latest/utils/notebook_utils.py\",\n",
-    ")\n",
-    "open(\"notebook_utils.py\", \"w\").write(r.text)\n",
     "\n",
-    "r = requests.get(\n",
-    "    url=\"https://raw.githubusercontent.com/openvinotoolkit/openvino_notebooks/latest/utils/cmd_helper.py\",\n",
-    ")\n",
-    "open(\"cmd_helper.py\", \"w\").write(r.text)"
+    "if not Path(\"notebook_utils.py\").exists():\n",
+    "    r = requests.get(\n",
+    "        url=\"https://raw.githubusercontent.com/openvinotoolkit/openvino_notebooks/latest/utils/notebook_utils.py\",\n",
+    "    )\n",
+    "    open(\"notebook_utils.py\", \"w\").write(r.text)\n",
+    "\n",
+    "\n",
+    "if not Path(\"cmd_helper.py\").exists():\n",
+    "    r = requests.get(\n",
+    "        url=\"https://raw.githubusercontent.com/openvinotoolkit/openvino_notebooks/latest/utils/cmd_helper.py\",\n",
+    "    )\n",
+    "    open(\"cmd_helper.py\", \"w\").write(r.text)"
    ]
   },
   {
@@ -357,6 +362,19 @@
     "[back to top ⬆️](#Table-of-contents:)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "175ad576",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "if not Path(\"gradio_helper.py\").exists():\n",
+    "    r = requests.get(\"https://raw.githubusercontent.com/openvinotoolkit/openvino_notebooks/latest/notebooks/text-to-image-genai/gradio_helper.py\")\n",
+    "    with open(\"gradio_helper.py\", \"w\") as f:\n",
+    "        f.write(r.text)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -402,7 +420,8 @@
    "tags": {
     "categories": [
      "Model Demos",
-     "AI Trends"
+     "AI Trends",
+     "API Overview"
     ],
     "libraries": [],
     "other": [