When I use download_as_string() method or similar, logging.root logger is being activated by calling logging.info() on line

. It causes other loggers to be logged by the root logger which is unexpected as some apps require a single logger in strict format.

Environment details

• OS type and version: ubuntu 20.04
• Python version: 3.8.6
• pip version: 20.2.4
• google-cloud-storage version: 1.33.0

Steps to reproduce

1. set up your own logger for any logger
2. call logger.info("test") (nothing should happen)
3. run Client.from_service_account_json().get_bucket(...).blob(..., chunk_size=1024*1024).download_as_string()
4. call logger.info("test") one more time
5. log in basic format should appear on stdout (unexpected)

How to fix it

you need to use your own logger (e.g. using logging.getLogger(__name__) instead of root logger.