errorhandler A logging framework handler that tracks when messages above a certain level have been logged.
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Python framework logger logging framework error handler Python logger

errorhandler Description

A logging framework handler that tracks when messages above a certain level have been logged. errorhandler is a handler for the Python standard logging framework that can be used to tell whether messages have been logged at or above a certain level.This can be useful when wanting to ensure that no errors have been logged before committing data back to a database.Here's an example:First, you set up the error handler:>>> from logging import getLogger>>> from errorhandler import ErrorHandler>>> logger = getLogger()>>> e = ErrorHandler()The handler started off being un-fired:>>> e.firedFalseThen you do whatever else you need to do, which may involve logging:>>> logger.info('some information')>>> e.firedFalseHowever, if any logging occurs at an error level or above:>>> logger.error('an error')Then the error handler becomes fired:>>> e.firedTrueYou use this as a condition to only do certain actions when no errors have been logged:>>> if e.fired:... print "Not updating files as errors have occurred"Not updating files as errors have occurredIf your code does work in batches, you may wish to reset the error handler at the start of each batch:>>> e.reset()>>> e.firedFalseFinally, it's good practice to remove the handler when you're done, although this doesn't matter too much:>>> e.remove()Once removed, the error handler will not become fired, even >>> logger.error('an error') >>> e.fired FalseThe full set of options available when constructing an error handler is as follows:ErrorHandler(level=logging.ERROR,logger='',install=True)levelThis specifies the logging level at which the error handler will fire. Any message logged at or above this level will trigger the error handler.loggerThis specifies the logger on which the error handler will be installed. The default is the root logger.installIf True, the handler is automatically installed. If False, the handler has to be manually installed by calling its install method: >>> e=ErrorHandler(install=False) >>> logger.error('an error') >>> e.fired False >>> e.install() >>> logger.error('an error') >>> e.fired True >>> e.remove() Requirements: · Python

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