Уровни логирования в Python

Level	When it’s used
DEBUG	Detailed information, typically of interest only when diagnosing problems.
INFO	Confirmation that things are working as expected.
WARNING	An indication that something unexpected happened, or indicative of some problem in the near future (e.g. ‘disk space low’). The software is still working as expected.
ERROR	Due to a more serious problem, the software has not been able to perform some function.
CRITICAL	A serious error, indicating that the program itself may be unable to continue running.

Уровни логирования в логерах для OS X

У NSLogger в  NSLogger desktop viewer если следующие уровни для лог-сообщений:

// Log level usual usage:
// Level 0: errors only!
// Level 1: important informations, app states…
// Level 2: less important logs, network requests…
// Level 3: network responses, datas and images…
// Level 4: really not important stuff.

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В официальной документации даны следующие уровни:

Set a Log Level

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В CocoaLumberjack используются следующие уровни логирования:

/**
 * Ready to use log macros with no context or tag.
 **/
#define DDLogError(frmt, ...)   LOG_MAYBE(NO,                LOG_LEVEL_DEF, DDLogFlagError,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogWarn(frmt, ...)    LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagWarning, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogInfo(frmt, ...)    LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagInfo,    0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogDebug(frmt, ...)   LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagDebug,   0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)
#define DDLogVerbose(frmt, ...) LOG_MAYBE(LOG_ASYNC_ENABLED, LOG_LEVEL_DEF, DDLogFlagVerbose, 0, nil, __PRETTY_FUNCTION__, frmt, ##__VA_ARGS__)

Продвинутое использование Celery

Использование Python для интерактивного анализа данных

Cocaine: погружение в облака