Python logging._handlers() Examples

The following are 30 code examples for showing how to use logging._handlers(). These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.

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Example 1
Project: Transcrypt   Author: QQuick   File: utils.py    License: Apache License 2.0 6 votes vote down vote up
def resetLogging():
    """ Reset the handlers and loggers so that we
    can rerun the tests starting from a blank slate.
    """
    __pragma__("skip")
    logging._handlerList = []

    import weakref
    logging._handlers = weakref.WeakValueDictionary()

    logging.root = logging.RootLogger(logging.WARNING)
    logging.Logger.root = logging.root
    logging.Logger.manager = logging.Manager(logging.root)
    logging.root.manager = logging.Logger.manager
    __pragma__("noskip")

    if __envir__.executor_name == __envir__.transpiler_name:
        logging._resetLogging() 
Example 2
Project: jawfish   Author: war-and-code   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import configparser

    cp = configparser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.read_file(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 3
Project: jawfish   Author: war-and-code   File: regrtest.py    License: MIT License 5 votes vote down vote up
def get_logging__handlers(self):
        # _handlers is a WeakValueDictionary
        return id(logging._handlers), logging._handlers, logging._handlers.copy() 
Example 4
Project: meddle   Author: glmcdona   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 5
Project: ironpython2   Author: IronLanguages   File: config.py    License: Apache License 2.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 6
Project: BinderFilter   Author: dxwu   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 7
Project: Computable   Author: ktraunmueller   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 8
Project: oss-ftp   Author: aliyun   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 9
Project: pmatic   Author: LarsMichelsen   File: config.py    License: GNU General Public License v2.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 10
Project: Fluid-Designer   Author: Microvellum   File: config.py    License: GNU General Public License v3.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import configparser

    if isinstance(fname, configparser.RawConfigParser):
        cp = fname
    else:
        cp = configparser.ConfigParser(defaults)
        if hasattr(fname, 'readline'):
            cp.read_file(fname)
        else:
            cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 11
Project: Fluid-Designer   Author: Microvellum   File: regrtest.py    License: GNU General Public License v3.0 5 votes vote down vote up
def get_logging__handlers(self):
        # _handlers is a WeakValueDictionary
        return id(logging._handlers), logging._handlers, logging._handlers.copy() 
Example 12
Project: Fluid-Designer   Author: Microvellum   File: test_logging.py    License: GNU General Public License v3.0 5 votes vote down vote up
def setUp(self):
        """Setup the default logging stream to an internal StringIO instance,
        so that we can examine log output as we want."""
        logger_dict = logging.getLogger().manager.loggerDict
        logging._acquireLock()
        try:
            self.saved_handlers = logging._handlers.copy()
            self.saved_handler_list = logging._handlerList[:]
            self.saved_loggers = saved_loggers = logger_dict.copy()
            self.saved_name_to_level = logging._nameToLevel.copy()
            self.saved_level_to_name = logging._levelToName.copy()
            self.logger_states = logger_states = {}
            for name in saved_loggers:
                logger_states[name] = getattr(saved_loggers[name],
                                              'disabled', None)
        finally:
            logging._releaseLock()

        # Set two unused loggers
        self.logger1 = logging.getLogger("\xab\xd7\xbb")
        self.logger2 = logging.getLogger("\u013f\u00d6\u0047")

        self.root_logger = logging.getLogger("")
        self.original_logging_level = self.root_logger.getEffectiveLevel()

        self.stream = io.StringIO()
        self.root_logger.setLevel(logging.DEBUG)
        self.root_hdlr = logging.StreamHandler(self.stream)
        self.root_formatter = logging.Formatter(self.log_format)
        self.root_hdlr.setFormatter(self.root_formatter)
        if self.logger1.hasHandlers():
            hlist = self.logger1.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        if self.logger2.hasHandlers():
            hlist = self.logger2.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        self.root_logger.addHandler(self.root_hdlr)
        self.assertTrue(self.logger1.hasHandlers())
        self.assertTrue(self.logger2.hasHandlers()) 
Example 13
Project: Fluid-Designer   Author: Microvellum   File: test_logging.py    License: GNU General Public License v3.0 5 votes vote down vote up
def tearDown(self):
        """Remove our logging stream, and restore the original logging
        level."""
        self.stream.close()
        self.root_logger.removeHandler(self.root_hdlr)
        while self.root_logger.handlers:
            h = self.root_logger.handlers[0]
            self.root_logger.removeHandler(h)
            h.close()
        self.root_logger.setLevel(self.original_logging_level)
        logging._acquireLock()
        try:
            logging._levelToName.clear()
            logging._levelToName.update(self.saved_level_to_name)
            logging._nameToLevel.clear()
            logging._nameToLevel.update(self.saved_name_to_level)
            logging._handlers.clear()
            logging._handlers.update(self.saved_handlers)
            logging._handlerList[:] = self.saved_handler_list
            loggerDict = logging.getLogger().manager.loggerDict
            loggerDict.clear()
            loggerDict.update(self.saved_loggers)
            logger_states = self.logger_states
            for name in self.logger_states:
                if logger_states[name] is not None:
                    self.saved_loggers[name].disabled = logger_states[name]
        finally:
            logging._releaseLock() 
Example 14
Project: Fluid-Designer   Author: Microvellum   File: test_logging.py    License: GNU General Public License v3.0 5 votes vote down vote up
def test_config14_ok(self):
        with support.captured_stdout() as output:
            self.apply_config(self.config14)
            h = logging._handlers['hand1']
            self.assertEqual(h.foo, 'bar')
            self.assertEqual(h.terminator, '!\n')
            logging.warning('Exclamation')
            self.assertTrue(output.getvalue().endswith('Exclamation!\n')) 
Example 15
Project: Fluid-Designer   Author: Microvellum   File: test_logging.py    License: GNU General Public License v3.0 5 votes vote down vote up
def cleanup(self):
        setattr(logging.root, 'handlers', self.handlers)
        logging._handlers.clear()
        logging._handlers.update(self.saved_handlers)
        logging._handlerList[:] = self.saved_handler_list
        logging.root.level = self.original_logging_level 
Example 16
Project: Imogen   Author: CedricGuillemet   File: config.py    License: MIT License 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import configparser

    if isinstance(fname, configparser.RawConfigParser):
        cp = fname
    else:
        cp = configparser.ConfigParser(defaults)
        if hasattr(fname, 'readline'):
            cp.read_file(fname)
        else:
            cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        _clearExistingHandlers()

        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 17
Project: Imogen   Author: CedricGuillemet   File: config.py    License: MIT License 5 votes vote down vote up
def _clearExistingHandlers():
    """Clear and close existing handlers"""
    logging._handlers.clear()
    logging.shutdown(logging._handlerList[:])
    del logging._handlerList[:] 
Example 18
Project: ironpython3   Author: IronLanguages   File: config.py    License: Apache License 2.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import configparser

    if isinstance(fname, configparser.RawConfigParser):
        cp = fname
    else:
        cp = configparser.ConfigParser(defaults)
        if hasattr(fname, 'readline'):
            cp.read_file(fname)
        else:
            cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 19
Project: ironpython3   Author: IronLanguages   File: regrtest.py    License: Apache License 2.0 5 votes vote down vote up
def get_logging__handlers(self):
        # _handlers is a WeakValueDictionary
        return id(logging._handlers), logging._handlers, logging._handlers.copy() 
Example 20
Project: ironpython3   Author: IronLanguages   File: test_logging.py    License: Apache License 2.0 5 votes vote down vote up
def setUp(self):
        """Setup the default logging stream to an internal StringIO instance,
        so that we can examine log output as we want."""
        logger_dict = logging.getLogger().manager.loggerDict
        logging._acquireLock()
        try:
            self.saved_handlers = logging._handlers.copy()
            self.saved_handler_list = logging._handlerList[:]
            self.saved_loggers = saved_loggers = logger_dict.copy()
            self.saved_name_to_level = logging._nameToLevel.copy()
            self.saved_level_to_name = logging._levelToName.copy()
            self.logger_states = logger_states = {}
            for name in saved_loggers:
                logger_states[name] = getattr(saved_loggers[name],
                                              'disabled', None)
        finally:
            logging._releaseLock()

        # Set two unused loggers
        self.logger1 = logging.getLogger("\xab\xd7\xbb")
        self.logger2 = logging.getLogger("\u013f\u00d6\u0047")

        self.root_logger = logging.getLogger("")
        self.original_logging_level = self.root_logger.getEffectiveLevel()

        self.stream = io.StringIO()
        self.root_logger.setLevel(logging.DEBUG)
        self.root_hdlr = logging.StreamHandler(self.stream)
        self.root_formatter = logging.Formatter(self.log_format)
        self.root_hdlr.setFormatter(self.root_formatter)
        if self.logger1.hasHandlers():
            hlist = self.logger1.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        if self.logger2.hasHandlers():
            hlist = self.logger2.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        self.root_logger.addHandler(self.root_hdlr)
        self.assertTrue(self.logger1.hasHandlers())
        self.assertTrue(self.logger2.hasHandlers()) 
Example 21
Project: ironpython3   Author: IronLanguages   File: test_logging.py    License: Apache License 2.0 5 votes vote down vote up
def tearDown(self):
        """Remove our logging stream, and restore the original logging
        level."""
        self.stream.close()
        self.root_logger.removeHandler(self.root_hdlr)
        while self.root_logger.handlers:
            h = self.root_logger.handlers[0]
            self.root_logger.removeHandler(h)
            h.close()
        self.root_logger.setLevel(self.original_logging_level)
        logging._acquireLock()
        try:
            logging._levelToName.clear()
            logging._levelToName.update(self.saved_level_to_name)
            logging._nameToLevel.clear()
            logging._nameToLevel.update(self.saved_name_to_level)
            logging._handlers.clear()
            logging._handlers.update(self.saved_handlers)
            logging._handlerList[:] = self.saved_handler_list
            loggerDict = logging.getLogger().manager.loggerDict
            loggerDict.clear()
            loggerDict.update(self.saved_loggers)
            logger_states = self.logger_states
            for name in self.logger_states:
                if logger_states[name] is not None:
                    self.saved_loggers[name].disabled = logger_states[name]
        finally:
            logging._releaseLock() 
Example 22
Project: ironpython3   Author: IronLanguages   File: test_logging.py    License: Apache License 2.0 5 votes vote down vote up
def test_config14_ok(self):
        with captured_stdout() as output:
            self.apply_config(self.config14)
            h = logging._handlers['hand1']
            self.assertEqual(h.foo, 'bar')
            self.assertEqual(h.terminator, '!\n')
            logging.warning('Exclamation')
            self.assertTrue(output.getvalue().endswith('Exclamation!\n')) 
Example 23
Project: ironpython3   Author: IronLanguages   File: test_logging.py    License: Apache License 2.0 5 votes vote down vote up
def cleanup(self):
        setattr(logging.root, 'handlers', self.handlers)
        logging._handlers.clear()
        logging._handlers.update(self.saved_handlers)
        logging._handlerList[:] = self.saved_handler_list
        logging.root.level = self.original_logging_level 
Example 24
Project: datafari   Author: francelabs   File: config.py    License: Apache License 2.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 25
Project: Splunking-Crime   Author: nccgroup   File: config.py    License: GNU Affero General Public License v3.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import ConfigParser

    cp = ConfigParser.ConfigParser(defaults)
    if hasattr(fname, 'readline'):
        cp.readfp(fname)
    else:
        cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 26
Project: aioli   Author: aioli-framework   File: unit.py    License: MIT License 5 votes vote down vote up
def _register_logger(self, name):
        if self.app.config["debug"]:
            logger = logging.getLogger(name)
            logger.addHandler(logging._handlers["unit_console"])
            logger.propagate = False
            logger.setLevel(logging.DEBUG) 
Example 27
Project: promgen   Author: line   File: alerts-test.py    License: MIT License 5 votes vote down vote up
def handle(self, shard, service, project, **kwargs):
        logging._handlers = []
        logging.basicConfig(level=logging.DEBUG)

        shard, _ = models.Shard.objects.get_or_create(name=shard)
        service, _ = models.Service.objects.get_or_create(name=service)
        project, _ = models.Project.objects.get_or_create(
            name=project, defaults={"shard": shard, "service": service}
        )

        alert = models.Alert.objects.create(body=json.dumps(self.data), error_count=1)

        tasks.process_alert(alert.pk)

        alert.alerterror_set.create(message="Test from CLI") 
Example 28
Project: Project-New-Reign---Nemesis-Main   Author: ShikyoKira   File: config.py    License: GNU General Public License v3.0 5 votes vote down vote up
def fileConfig(fname, defaults=None, disable_existing_loggers=True):
    """
    Read the logging configuration from a ConfigParser-format file.

    This can be called several times from an application, allowing an end user
    the ability to select from various pre-canned configurations (if the
    developer provides a mechanism to present the choices and load the chosen
    configuration).
    """
    import configparser

    if isinstance(fname, configparser.RawConfigParser):
        cp = fname
    else:
        cp = configparser.ConfigParser(defaults)
        if hasattr(fname, 'readline'):
            cp.read_file(fname)
        else:
            cp.read(fname)

    formatters = _create_formatters(cp)

    # critical section
    logging._acquireLock()
    try:
        logging._handlers.clear()
        del logging._handlerList[:]
        # Handlers add themselves to logging._handlers
        handlers = _install_handlers(cp, formatters)
        _install_loggers(cp, handlers, disable_existing_loggers)
    finally:
        logging._releaseLock() 
Example 29
Project: Project-New-Reign---Nemesis-Main   Author: ShikyoKira   File: regrtest.py    License: GNU General Public License v3.0 5 votes vote down vote up
def get_logging__handlers(self):
        # _handlers is a WeakValueDictionary
        return id(logging._handlers), logging._handlers, logging._handlers.copy() 
Example 30
def setUp(self):
        """Setup the default logging stream to an internal StringIO instance,
        so that we can examine log output as we want."""
        logger_dict = logging.getLogger().manager.loggerDict
        logging._acquireLock()
        try:
            self.saved_handlers = logging._handlers.copy()
            self.saved_handler_list = logging._handlerList[:]
            self.saved_loggers = saved_loggers = logger_dict.copy()
            self.saved_name_to_level = logging._nameToLevel.copy()
            self.saved_level_to_name = logging._levelToName.copy()
            self.logger_states = logger_states = {}
            for name in saved_loggers:
                logger_states[name] = getattr(saved_loggers[name],
                                              'disabled', None)
        finally:
            logging._releaseLock()

        # Set two unused loggers
        self.logger1 = logging.getLogger("\xab\xd7\xbb")
        self.logger2 = logging.getLogger("\u013f\u00d6\u0047")

        self.root_logger = logging.getLogger("")
        self.original_logging_level = self.root_logger.getEffectiveLevel()

        self.stream = io.StringIO()
        self.root_logger.setLevel(logging.DEBUG)
        self.root_hdlr = logging.StreamHandler(self.stream)
        self.root_formatter = logging.Formatter(self.log_format)
        self.root_hdlr.setFormatter(self.root_formatter)
        if self.logger1.hasHandlers():
            hlist = self.logger1.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        if self.logger2.hasHandlers():
            hlist = self.logger2.handlers + self.root_logger.handlers
            raise AssertionError('Unexpected handlers: %s' % hlist)
        self.root_logger.addHandler(self.root_hdlr)
        self.assertTrue(self.logger1.hasHandlers())
        self.assertTrue(self.logger2.hasHandlers())