[Solved]-Root logger in dictconfig

Either way will work, because the logger named '' is the root logger. Specifying the top-level key root makes it clearer what you’re doing if you’re configuring a lot of loggers – the '' logger configuration could be lost inside a group of others, whereas the root key is adjacent to the loggers key and so (in theory) should stand out more.

To reiterate, the key named root is a top-level key; it’s not under loggers.