Logga
logga wraps the standard Python logging module and
abstracts some of the messy parts. logging itself is similar to (possibly even motivated by) the
log4j project. Most importantly, logging guarantees a singleton object
that can be used throughout your project.
Other useful links:
Simplest Usage (Console)
Note
Behind the scenes, the logga log handler object is instantiated through the module-level
function logging.getLogger(name). Multiple calls to getLogger() with the same name will always
return a reference to the same logger object.
name is defined as the highest level Python calling module. For example, in the
Module usage sample below,
name will be you_beaut.py. For normal console-based output, name would be <stdin>.
The following example demonstrates console-based usage that writes to STDOUT from within the Python interpreter:
>>> from logga import log, set_log_level
>>> log.info("This is an INFO level log")
2023-01-08 22:56:56 logga [INFO]: This is an INFO level log
logga provides a default logger for you. This defaults to the log level INFO. You can set the
log level with the set_log_level function:
>>> set_log_level("WARNING")
>>> log.debug("This is a DEBUG level log")
>>>
>>> set_log_level("DEBUG")
>>> log.debug("This is a DEBUG level log")
>>> 2023-01-08 23:03:13 logga [DEBUG]: This is a DEBUG level log
Module usage
Logging from your *.py is probably a more useful proposition. To demonstrate, add the
following code into a file called you_beaut.py:
To execute:
But what if you want to log to a file? In this case you will have to provide configuration. The structure
of the config is standard logging. For example, place the following configuration into a file called log.conf
in the same directory as you_beaut.py:
[loggers]
keys=root,you_beaut.py,console
[handlers]
keys=youBeautFileHandler,consoleHandler
[formatters]
keys=simpleFormatter
[logger_root]
level=DEBUG
handlers=consoleHandler
[logger_console]
level=DEBUG
handlers=consoleHandler
qualname=console
propagate=0
[logger_you_beaut.py]
level=DEBUG
qualname=you_beaut.py
handlers=youBeautFileHandler
[handler_youBeautFileHandler]
class=handlers.TimedRotatingFileHandler
level=DEBUG
formatter=simpleFormatter
args=(os.path.join(os.sep, "var", "tmp", "you_beaut.log"), "midnight")
[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=simpleFormatter
args=(sys.stdout, )
[formatter_simpleFormatter]
format=%(asctime)s (%(levelname)s): %(message)s
datefmt=
Now, when you python you_beaut.py you will notice that output to the console is suppressed.
Instead, the output is directed to a file stream defined by the handler_youBeautFileHandler section from
the log.conf file. To verify: