Log Django exceptions to file. Contains snippet for both WatchedFileHandler and RotatingFileHandler handlers.

settings.py

# Add this configuration to your Django settings.py file

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '%(levelname)s %(asctime)s %(module)s %(process)d %(thread)d %(message)s',
            'datefmt': "%d/%b/%Y %H:%M:%S",
        },
    },
    'handlers': {
        # Log to a text file
        'logfile': {
            'class': 'logging.handlers.WatchedFileHandler',
            'filename': 'path/to/log/file',
            'formatter': 'verbose',
        },
    },
    'loggers': {
        'django': {
            'handlers': ['logfile'],
            'level': 'DEBUG',
            'propagate': False,
        },
    },
}


# This is logging configuration 'RotatingFileHandler'
# The setting mentioned above and below are totally seprate.
# Use python manage.py runserver --no-reload.
# If you get file in use error
# Logger configuration

# Create a seprate folder within your project.
# For storing logs.
# Change `myproject` with your project name.
LOGFILE_NAME = os.path.join(BASE_DIR,  'logs/myproject.log')
# Max size allowed for one file
# This setting will be used by 'RotatingFileHandler'
# I have kept maxBytes to low value.
# Just for demonstration purpose.
LOGFILE_SIZE = 1 * 1024
# Log file count
LOGFILE_COUNT = 2

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '%(levelname)s %(asctime)s %(module)s %(process)d %(thread)d %(message)s',
            'datefmt': "%d/%b/%Y %H:%M:%S",
        },
    },
    'handlers': {
        # Log to a text file that can be rotated by logrotate
        'logfile': {
            'level': 'DEBUG',
            'formatter': 'verbose',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': LOGFILE_NAME,
            'maxBytes': LOGFILE_SIZE,
            'backupCount': LOGFILE_COUNT,
        },
    },
    'loggers': {
        'django': {
            'handlers': ['logfile'],
            'level': 'DEBUG',
            'propagate': True,
        },
    },
}