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Python logging Module

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Example

Verify that you can get a logger (no messages emitted):

import logging

logger = logging.getLogger("demo")
print(logger.name)

Try it Yourself »

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Definition and Usage

The logging module provides a flexible framework for emitting log messages from Python programs.

Use it to configure handlers, formatters, and log levels to capture diagnostics in development and production.

Members

Member	Description
basicConfig()	Configure the root logger.
critical()	Log a message with severity CRITICAL on the root logger.
CRITICAL	Critical log level constant.
debug()	Log a message with severity DEBUG on the root logger.
DEBUG	Debug log level constant.
error()	Log a message with severity ERROR on the root logger.
ERROR	Error log level constant.
getLogger()	Return a logger with the specified name (creating it if necessary).
Handler	Base class for all logging handlers.
info()	Log a message with severity INFO on the root logger.
INFO	Info log level constant.
log()	Log a message with specified severity on the root logger.
Logger	Logger class for creating logger instances.
warning()	Log a message with severity WARNING on the root logger.
WARNING	Warning log level constant.

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