14.1. Logging About¶
Do not print
Always use logger
Logs can be displayed on console
Logs can be redirected to file
Logs can be redirected to database
Logs can be silenced (certain level)
Logs can be rotated
Logs can change format
>>> import logging
>>>
>>>
>>> def run():
... logging.warning('Program start')
... for number in range(0,3):
... logging.info(f'Current number: {number}')
... logging.warning('Program end')
>>>
>>>
>>> run()
WARNING:root:Program start
WARNING:root:Program end