update pydata_google_auth snippet

Author: tswast

2020/bigquery-python/user-credentials-magics.ipynb

@@ -6,6 +6,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# Install the google-cloud-bigquery and pydata-google-auth packages\n",
+    "# to use this code snippet.\n",
+    "import google.cloud.bigquery\n",
     "import google.cloud.bigquery.magics\n",
     "import pydata_google_auth"
    ]
@@ -16,7 +19,10 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "credentials = pydata_google_auth.get_user_credentials([\"https://www.googleapis.com/auth/cloud-platform\"])"
+    "# In the cell output, open the link to authenticate with your\n",
+    "# Google credentials.\n",
+    "credentials = pydata_google_auth.get_user_credentials([\"https://www.googleapis.com/auth/cloud-platform\"])\n",
+    "project_id = \"my-project-id\""
    ]
   },
   {
@@ -25,7 +31,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "google.cloud.bigquery.magics.context.project = \"my-project-id\"\n",
+    "# Configure the magics to use your credentials and project.\n",
+    "google.cloud.bigquery.magics.context.project = project_id\n",
     "google.cloud.bigquery.magics.context.credentials = credentials"
    ]
   },
@@ -52,6 +59,41 @@
     "LIMIT 3"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Configure a BigQuery client to use your credentials and project.\n",
+    "bqclient = google.cloud.bigquery.Client()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "query_job = bqclient.query(\n",
+    "\"\"\"SELECT name, SUM(number) as count\n",
+    "FROM `bigquery-public-data.usa_names.usa_1910_current`\n",
+    "GROUP BY name\n",
+    "ORDER BY count DESC\n",
+    "LIMIT 3\n",
+    "\"\"\")\n",
+    "query_job.result()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "query_job.to_dataframe()"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -62,7 +104,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -76,7 +118,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.9.5"
   }
  },
  "nbformat": 4,