Ultimate Python colorized logger.
This script runs like above screenshot.
import sys
import logging
from rainbow_logging_handler import RainbowLoggingHandler
def main_func():
# setup `logging` module
logger = logging.getLogger('test_logging')
logger.setLevel(logging.DEBUG)
formatter = logging.Formatter("[%(asctime)s] %(name)s %(funcName)s():%(lineno)d\t%(message)s") # same as default
# setup `RainbowLoggingHandler`
handler = RainbowLoggingHandler(sys.stderr, color_funcName=('black', 'yellow', True))
handler.setFormatter(formatter)
logger.addHandler(handler)
logger.debug("debug msg")
logger.info("info msg")
logger.warn("warn msg")
logger.error("error msg")
logger.critical("critical msg")
try:
raise RuntimeError("Opa!")
except Exception as e:
logger.exception(e)
if __name__ == '__main__':
main_func()
Django is a popular Python web framework.
Put the following to your settings.py to get more pleasant development server console output:
# Add this to your settings.py
if DEBUG:
# Install rainbow logging handler when running Django in develoment mode
import sys
LOGGING["handlers"]["rainbow"] = {"level": "DEBUG", "class": "rainbow_logging_handler.RainbowLoggingHandler", 'stream': sys.stderr}
LOGGING["loggers"]['']["handlers"].append("rainbow")
More about configuring loggers for Django.
Set handler_console section in develop.ini:
[handler_console] class = rainbow_logging_handler.RainbowLoggingHandler args = (sys.stderr,) level = NOTSET format = [%(asctime)s] %(name)s %(funcName)s():%(lineno)d\t%(message)s
As apparent from above screenshot, each column of logs are differently colored. Even default coloring should make log reading easier.
Every column colors are customizable.
formatter = logging.Formatter('%(pathname)s [%(module)s] - %(funcName)s:L%(lineno)d : %(message)s')
handler = RainbowLoggingHandler(
sys.stderr,
# Customizing each column's color
color_pathname=('black', 'red' , True), color_module=('yellow', None, False),
color_funcName=('blue' , 'white', True), color_lineno=('green' , None, False),
)
handler.setFormatter(formatter)
logger.addHandler(handler)
logger.info("hello custom world")Above code produces output like this.
Linux, BSD, Mac OS, and Windows are supposed to be supported.
Runs with both Python 2.6 or higher & Python 3.2 or higher.
pip install rainbow_logging_handlerpip install -e "git+https://github.com/laysakura/rainbow_logging_handler.git#egg=rainbow_logging_handler"Mikko Ohtamaa <[email protected]>, Sho Nakatani <[email protected]>
And special thanks to 10sr for advice.
This is free and unencumbered public domain software. For more information, see <http://unlicense.org/> or the accompanying LICENSE.txt file.
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