docs: revise delete label table code sample, add TODO to clean up sni…

docs/snippets.py

@@ -203,6 +203,8 @@ def test_manage_table_labels(client, to_delete):
     # [END bigquery_get_table_labels]
     assert table.labels == labels
 
+    # TODO(Mattix23): After code sample is updated from cloud.google.com delete this
+
     # [START bigquery_delete_label_table]
     # from google.cloud import bigquery
     # client = bigquery.Client()

samples/snippets/delete_label_table.py

@@ -0,0 +1,43 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from google.cloud import bigquery
+
+
+def delete_label_table(table_id: str, label_key: str) -> bigquery.Table:
+    orig_table_id = table_id
+    orig_label_key = label_key
+    # [START bigquery_delete_label_table]
+    from google.cloud import bigquery
+
+    client = bigquery.Client()
+
+    # TODO(dev): Change table_id to the full name of the table you wish to delete from.
+    table_id = "your-project.your_dataset.your_table_name"
+    # TODO(dev): Change label_key to the name of the label you want to remove.
+    label_key = "color"
+    # [END bigquery_delete_label_table]
+    table_id = orig_table_id
+    label_key = orig_label_key
+    # [START bigquery_delete_label_table]
+    table = client.get_table(table_id)  # API request
+
+    # To delete a label from a table, set its value to None
+    table.labels[label_key] = None
+
+    table = client.update_table(table, ["labels"])  # API request
+
+    print(f"Deleted label '{label_key}' from {table_id}.")
+    # [END bigquery_delete_label_table]
+    return table

samples/snippets/delete_label_table_test.py

@@ -0,0 +1,34 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import typing
+
+import delete_label_table
+
+if typing.TYPE_CHECKING:
+    import pytest
+
+
+def test_delete_label_table(
+    capsys: "pytest.CaptureFixture[str]",
+    table_id: str,
+) -> None:
+
+    table = delete_label_table.delete_label_table(table_id, "color")
+
+    out, _ = capsys.readouterr()
+    assert "Deleted" in out
+    assert "color" in out
+    assert table_id in out
+    assert table.labels is None or "color" not in table.labels