Easy logger management for libraries and CLI tools.
magiclog simplifies application and library logging, allowing you to use loggers where you would use print statements without complicated setup or logger discovery.
from magiclog import log def main(): log.configure() log.info('Hello, INFO.') if __name__ == '__main__': main()
magiclog tunes the logging config in a way that’s friendlier than the logging module’s basic config, without asking any more work from the library author:
magiclog only arranges to log at all when you call log.configure(). If you’d like to customize levels, you can explicitly pass them to log.configure() with the level=..., syslog=... and stderr=... named parameters. Otherwise, your logger has a null handler, as described in Configuring Logging for a Library
log.configure() # Same as the above. log.configure(level='info') # Use Syslog or stderr based on whether or not we're in the foreground, # but at debug level instead of info level. log.configure(level='debug') # Enables both channels, whether foregrounded or backgrounded. log.configure(syslog='info', stderr='info') # Enables the more verbose console logging format, with module and function # name information as well as time. log.configure(level='info', extended=True)
The logger function in magiclog provides for logger discovery, walking the stack and using the module or package name, or the name of the running executable, depending on the situation. You can use logger to retrieve and configure the loggers of other modules, too, following the same rules as your application logger.
import magiclog from magiclog import log def main(): # You can pass a module object or a string to ``logger``. Here, we # configure magiclog's own (usually not very useful) logger. magiclog.logger(magiclog).configure() # Obtain a reference to Boto3's logger and auto-configure it. The # logger for ``magiclog`` will print out a few things as it sets this # logger up. magiclog.logger('boto3').configure() log.configure() log.info('Hello, INFO.') if __name__ == '__main__': main()