18

From the Django documentation, here is an example format for logging:

'formatters': {
    'verbose': {
        'format': '%(levelname)s %(asctime)s %(module)s: %(message)s'
    }
}

This prints something like:

ERROR 2012-05-22 14:33:07,261 views 42892 4398727168 hello

Is there a list of items you can include in the string formatting? For example, I'd like to be able to see the function and app where the message is being created, for example:

ERROR time myproject.myapp.views.login_function message

David542
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2 Answers2

42

From Python logging module documentation:

  • asctime: %(asctime)s
    Human-readable time when the LogRecord was created. By default this is of the form ‘2003-07-08 16:49:45,896’ (the numbers after the comma are millisecond portion of the time).

  • created: %(created)f
    Time when the LogRecord was created (as returned by time.time()).

  • filename: %(filename)s
    Filename portion of pathname.

  • funcName: %(funcName)s
    Name of function containing the logging call.

  • levelname: %(levelname)s Text logging level for the message ('DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL').

  • levelno: %(levelno)s
    Numeric logging level for the message (DEBUG, INFO, WARNING, ERROR, CRITICAL).

  • lineno: %(lineno)d
    Source line number where the logging call was issued (if available).

  • module: %(module)s
    Module (name portion of filename).

  • msecs: %(msecs)d
    Millisecond portion of the time when the LogRecord was created.

  • message: %(message)s
    The logged message, computed as msg % args. This is set when Formatter.format() is invoked.

  • name: %(name)s
    Name of the logger used to log the call.

  • pathname: %(pathname)s
    Full pathname of the source file where the logging call was issued (if available).

  • process: %(process)d
    Process ID (if available).

  • processName: %(processName)s
    Process name (if available).

  • relativeCreated: %(relativeCreated)d
    Time in milliseconds when the LogRecord was created, relative to the time the logging module was loaded.

  • thread: %(thread)d
    Thread ID (if available).

  • threadName: %(threadName)s
    Thread name (if available).

The following arguments are also available to Formatter.format(), although they are not intended to be included in the format string:

  • args:
    The tuple of arguments merged into msg to produce message.

  • exc_info:
    Exception tuple (à la sys.exc_info) or, if no exception has occurred, None.

  • msg:
    The format string passed in the original logging call. Merged with args to produce message, or an arbitrary object (see Using arbitrary objects as messages).

4

Step1. Edit your settings.py file

$ cd mysite
$ vim mysite/settings.py
'formatters': {
    'simple': {
        'format': '%(levelname)s %(asctime)s %(name)s.%(funcName)s:%(lineno)s- %(message)s'
    },
},

Step2. You should use logger in your coding like this:

import logging
logger = logging.getLogger(__name__)

def fn1() {
    logger.info('great!')
    logger.info(__name__)
}

Hope that helps you!

Binhong Wu
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