making log files in python
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
"""
DEBUG
INFO
WARNING
ERROR
CRITICAL
"""
# asctime: time of the log was printed out
# levelname: name of the log
# datefmt: format the time of the log
# give DEBUG log
logging.basicConfig(format='%(asctime)s %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%d-%m-%Y:%H:%M:%S',
level=logging.DEBUG,
filename='logs.txt')
logger = logging.getLogger('my_app')
logger.debug("This is a debug log")
logger.info("This is an info log")
logger.critical("This is critical")
logger.error("An error occurred")python logging example
# logging_example.py
import logging
# Create a custom logger
logger = logging.getLogger(__name__)
# Create handlers
c_handler = logging.StreamHandler()
f_handler = logging.FileHandler('file.log')
c_handler.setLevel(logging.WARNING)
f_handler.setLevel(logging.ERROR)
# Create formatters and add it to handlers
c_format = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
f_format = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
c_handler.setFormatter(c_format)
f_handler.setFormatter(f_format)
# Add handlers to the logger
logger.addHandler(c_handler)
logger.addHandler(f_handler)
logger.warning('This is a warning')
logger.error('This is an error')python logging basiclogging rotatingfilehandler
import logging
rfh = logging.handlers.RotatingFileHandler(
filename='foo.log',
mode='a',
maxBytes=20*1024*1024,
backupCount=2,
encoding=None,
delay=0
)
logging.basicConfig(
level=logging.DEBUG,
format="%(asctime)s %(name)-25s %(levelname)-8s %(message)s",
datefmt="%y-%m-%d %H:%M:%S",
handlers=[
rfh
]
)
logger = logging.getLogger('main')
logger.debug("test")python fme logger
logger = fmeobjects.FMELogFile()
logger.logMessageString("{}".format('Error'), fmeobjects.FME_ERROR)Copyright © 2021 Codeinu
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