Is R logger's debugger level - FINEST equal to Python's DEBUG?

I'm trying to convert an R script to Python by understanding it's functionality.

They've created a logger in R and set level for the logger. What I'm confused about it is the word FINEST as log level. I haven't come across any such level before in any language.

Is that FINEST level in R equals to Python'sDEBUG which gives all the output?

setLevel(level='FINEST', container=r_logger)