How it works...

There are three parts to introducing logging into an application:

  • Creating logger objects
  • Placing log requests near important state changes
  • Configuring the logging system as a whole

Creating loggers can be done in a variety of ways. Additionally, it can also be ignored. As a default, we can use the logging module itself as a logger. If we use the logging.info() method, for example, this will implicitly use the root logger.

A more common approach is to create one logger with the same name as the module:

    logger = logging.getLogger(__name__) 

For the top-level, main script, this will have the name "__main__". For imported modules, the name will match the module name.

In more complex applications, there will be a variety of ...

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