def download_raw_data()

in app/python/process.py [0:0]

• 13 lines of code
• 3 McCabe index (conditional complexity)

def download_raw_data():
    """
    Download raw data from Cloud Storage into local file for processing
    """
    logging.info("  download_raw_data: start downloading data")

    if RAW_DATA_BUCKET is None:
        raise ValueError("RAW_DATA_BUCKET required")

    if PROCESSED_DATA_BUCKET is None:
        raise ValueError("PROCESSED_DATA_BUCKET required")

    temp_datafile = f"{tempfile.mkdtemp()}/raw_data.csv"
    logging.info("  download_raw_data: processing from " f"{RAW_DATA_BUCKET}")

    storage_client = google.cloud.storage.Client()
    raw_bucket = storage_client.get_bucket(RAW_DATA_BUCKET)

    raw_bucket.blob(RAW_DATA_FILE).download_to_filename(temp_datafile)

    logging.info(f"  download_raw_data: downloaded data to {temp_datafile}")
    return temp_datafile