Update anthropic_claude_intro.ipynb (#4501)

add opus 4.7 multi region endpoint support b/491171457

Author: ian1780

notebooks/official/generative_ai/anthropic_claude_intro.ipynb

@@ -213,6 +213,8 @@
         "if MODEL == \"claude-opus-4-7\":\n",
         "    available_regions = [\n",
         "        \"global\",\n",
+        "        \"us\",\n",
+        "        \"eu\",\n",
         "    ]\n",
         "elif MODEL == \"claude-sonnet-4-6\":\n",
         "    available_regions = [\n",
@@ -319,9 +321,12 @@
       "outputs": [],
       "source": [
         "PROJECT_ID = \"[your-project-id]\"  # @param {type:\"string\"}\n",
+        "MULTI_REGION_LIST = [\"us\", \"eu\"]\n",
         "\n",
         "if LOCATION == \"global\":\n",
         "    ENDPOINT = \"https://aiplatform.googleapis.com\"\n",
+        "elif LOCATION in MULTI_REGION_LIST:\n",
+        "    ENDPOINT = f\"https://aiplatform.{LOCATION}.rep.googleapis.com\"\n",
         "else:\n",
         "    ENDPOINT = f\"https://{LOCATION}-aiplatform.googleapis.com\"\n",
         "\n",
@@ -678,6 +683,8 @@
         "if MODEL == \"claude-opus-4-7\":\n",
         "    available_regions = [\n",
         "        \"global\",\n",
+        "        \"us\",\n",
+        "        \"eu\",\n",
         "    ]\n",
         "elif MODEL == \"claude-sonnet-4-6\":\n",
         "    available_regions = [\n",