Python Quick Logging | QLogging

Beautifully colored, quick and simple Python logging. This logger is based on Python logging package

Screenshots:

Terminal/CMD

Notebooks:

Windows:

Features

Color logging in Terminal and CMD
Color logging in Jupyter Notebook and Jupyter Lab
Color logging in Kaggle Notebook
Color logging in Google Colab Notebook
Know which function the logger was called from
Know while line number the logger was called from
Support logging to a file
Simple and clean one-liner
Customizable

Installation

$ pip install qlogging

Examples

Logging only to console/notebook:

import qlogginglogger = qlogging.get_logger(level='debug')logger.debug("This is debug") logger.info("This is info")logger.warning("This is warning")logger.error("This is an error")logger.critical("This is a critical")

Output (output format: <time> <function_name>,<line#>| <log_message>):

12:21:37 foo(),3| This is debug 12:21:37 foo(),4| This is info 12:21:37 foo(),5| This is warning 12:21:37 foo(),6| This is an error 12:21:37 foo(),7| This is a critical

Logging to console/terminal and a log file (append if log file exists):

import qlogginglogger = qlogging.get_logger(level='debug', logfile='my_log.log')

Logging to console/terminal and a log file (overwrite if log file exists):

import qlogginglogger = qlogging.get_logger(level='debug', logfile='my_log.log', logfilemode='w')

Logging with `loggingmode='long'` (default is `loggingmode='short'`):

import qlogginglogger = qlogging.get_logger(level='debug', loggingmode='long')logger.debug("This is debug")

Output (output format: <date> <time> | <file_name> | <function_name>,<line#>| <log_message>):

2021-05-18 12:38:22 | <main.py> | <foo()>,4 | This is debug

Easy Customization

Customize your logger based on the following get_logger() function parameters

def get_logger(    level="info",    logfile=None,    logfilemode="a",    loggingmode="short",    format_str=None,    file_format_str=None,    format_date=None,    colors=None,    logger_config=None,):    """    returns Python logging based logger formatted with colors    :param level: (DEFAULT='info') str of logging level, each str option is mapped to Python logging levels, str options:                        'info': logging.INFO,                        'debug': logging.DEBUG,                        'warning': logging.WARNING,                        'error': logging.ERROR,                        'critical': logging.CRITICAL,                        'notset': logging.NOTSET    :param logfile: (DEFAULT=None) str path where to save log file, example: '/tmp/my_log.log'    :param logfilemode: (DEFAULT='a') str of log file writing mode, same as the ones documented at Python logging package. options:                        'a': appends to logfile                        'w': overwrites logfile    :param loggingmode: (DEFAULT='short') str logging mode to be selected. options:                        'short': will use short str format ('%(asctime)s %(funcName)s,%(lineno)s| %(message)s') and short date format ('%H:%M:%S')                        'medium': will use long str format ('%(asctime)s | %(filename)s | %(funcName)s,%(lineno)s | %(message)s') and long date format ('%Y-%m-%d %H:%M:%S')                        'manual': you need to set :param format_str: and :param format_date: yourself    :param format_str: (DEFAULT=None) str of format logging string for console, only set this if you selected :param loggingmode: as 'manual'. example (the style is always '%', see python logging module for more info):                        '%(asctime)s | %(filename)s | %(funcName)s,%(lineno)s | %(message)s'    :param file_format_str: (DEFAULT=None) str of format logging string for logfile (if you keep it None, we will use what you passed in :param format_str:), only set this if you selected :param loggingmode: as 'manual'. example (the style is always '%', see python logging module for more info):                        '%(asctime)s | %(filename)s | %(funcName)s,%(lineno)s | %(message)s'    :param date_str: (DEFAULT=None) str of date logging string, only set this if you selected :param loggingmode: as 'manual'. example:                        '%Y-%m-%d %H:%M:%S'    :param colors: (DEFAULT=None) dict of color settings, only set this if you selected :param loggingmode: as 'manual'. example:                        {                            'DEBUG': Fore.CYAN + Style.BRIGHT,                            'INFO': Fore.GREEN + Style.BRIGHT,                            'WARNING': Fore.YELLOW + Style.BRIGHT,                            'ERROR': Fore.RED + Style.BRIGHT,                            'CRITICAL': Fore.RED + Back.WHITE + Style.BRIGHT,                        }    :param logger_config: (DEFAULT=None) dict python logger config if you want to fully overwrite configs. example:                        {                            "version": 1,                            "disable_existing_loggers": False,                            "formatters": {                                "qlog": {                                    "()": "qlogging.qlogging.ColoredFormatter",                                    "colors":  {                                        'DEBUG': Fore.CYAN + Style.BRIGHT,                                        'INFO': Fore.GREEN + Style.BRIGHT,                                        'WARNING': Fore.YELLOW + Style.BRIGHT,                                        'ERROR': Fore.RED + Style.BRIGHT,                                        'CRITICAL': Fore.RED + Back.WHITE + Style.BRIGHT,                                    },                                    "format": "%(asctime)s [%(levelname)s] %(name)s: %(message)s",                                    "datefmt":'%H:%M:%S'                                },                            },                            "handlers": {                                "console": {                                    "level": "DEBUG",                                    "formatter": "qlog",                                    "class": "logging.StreamHandler",                                    "stream": "ext://sys.stdout",                                },                            },                            "loggers": {                                "": {                                    "handlers": ["console"],                                    "level": "DEBUG",                                    "propagate": True,                                },                            },                        }    :return: formated Python logging instance    """

Alternatives

coloredlogs 15.0: does not support coloring in notebooks.
colorlog 5.0.1: does not support coloring in notebooks.

Credit:

License

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