def sample_append_rows():
    # Create a client
    client = bigquery_storage_v1beta2.BigQueryWriteClient()

    # Initialize request argument(s)
    request = bigquery_storage_v1beta2.AppendRowsRequest(
        write_stream="write_stream_value",
    )

    # This method expects an iterator which contains
    # 'bigquery_storage_v1beta2.AppendRowsRequest' objects
    # Here we create a generator that yields a single `request` for
    # demonstrative purposes.
    requests = [request]

    def request_generator():
        for request in requests:
            yield request

    # Make the request
    stream = client.append_rows(requests=request_generator())

    # Handle the response
    for response in stream:
        print(response)