python logging source

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)

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')

Posted by: Guest on May-03-2021

Source

# can be done by using unittest's assertLogs from unittest import TestCase class MyTest(TestCase): def test_logs(self): with self.assertLogs('foo', level='INFO') as cm: logging.getLogger('foo').info('first message') logging.getLogger('foo.bar').error('second message') self.assertEqual(cm.output, ['INFO:foo:first message', 'ERROR:foo.bar:second message'])

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