Answers for "python parse log file"

making log files in python

#my youtube channel :- 
#https://www.youtube.com/channel/UC-sfqidn2fKZslHWnm5qe-A/videos
import logging
logging.basicConfig(filename='example.log', encoding='utf-8', level=logging.DEBUG)
logging.debug('This is debug message')
logging.info('This is information message')
logging.warning('This is warning message')
logging.error('This is warning message')

python logging to file

import logging
import sys

logger = logging.getLogger()
logger.setLevel(logging.INFO)
formatter = logging.Formatter('%(asctime)s | %(levelname)s | %(message)s', 
                              '%m-%d-%Y %H:%M:%S')

stdout_handler = logging.StreamHandler(sys.stdout)
stdout_handler.setLevel(logging.DEBUG)
stdout_handler.setFormatter(formatter)

file_handler = logging.FileHandler('logs.log')
file_handler.setLevel(logging.DEBUG)
file_handler.setFormatter(formatter)

logger.addHandler(file_handler)
logger.addHandler(stdout_handler)

tail a log file with python

pip or pip3 install sh

from sh import tail
# runs forever
for line in tail("-f", "/var/log/some_log_file.log", _iter=True):
    print(line)