dictConfig: logging.StreamHandler object is not iterable.
Peter Otten
__peter__ at web.de
Wed May 24 15:16:46 EDT 2017
Tim Williams wrote:
> (Apologies for using Google Groups to post)
>
> I'm trying to use dictConfig to configure logging. I keep running into the
> error that the logging.StreamHandler object is not iterable.
>
> I'm using Python 3.4.3 on a Windows 7 box.
>
> C:\Python34\python.exe 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40)
> [MSC v.1600 64 bit (AMD64)]
>
>
> I want to use the configobj module to create the dictionary from an INI
> file, but that's not the problem I'm having.
>
> Here is my test code:
> #############
> import logging, logging.config, logging.handlers
> import configobj
>
> # config = configobj.ConfigObj('loggingtest.ini')
> # config['version']=eval(config['version'])
> config = {
> 'version': 1,
> 'level': 'INFO',
> 'formatters': {'fmt1': {'format': '%(asctime)s: (%(levelname)s)
> %(message)s',
> 'datefmt': ''}
> },
> 'loggers': {'root': {'level': 'INFO',
> 'handlers': 'cfg://handlers.console'},
If I'm reading
<https://docs.python.org/dev/library/logging.config.html#dictionary-schema-details>
"""
loggers - the corresponding value will be a dict in which each key is a
logger name and each value is a dict describing how to configure the
corresponding Logger instance.
The configuring dict is searched for the following keys:
[...]
handlers (optional). A list of ids of the handlers for this logger.
"""
correctly this should be
'loggers': {'root': {'level': 'INFO',
'handlers': ['console']},
> 'file': {'level': 'WARN',
> 'handlers': 'cfg://handlers.file'}
Same here:
... 'handlers': ['file'] ...
> },
> 'handlers': {'console': {'class': 'logging.StreamHandler',
> 'level': 'INFO',
> 'stream': 'ext://sys.stdout'},
> 'file': {'class': 'logging.FileHandler',
> 'level': 'WARN',
> 'filename': 'test.log'}
> },
> }
>
>
> logging.config.dictConfig(config)
> ################
>
> When I run it, I get this traceback:
>
> Traceback (most recent call last):
> File "C:\Python34\lib\logging\config.py", line 611, in configure
> self.configure_logger(name, loggers[name])
> File "C:\Python34\lib\logging\config.py", line 775, in configure_logger
> self.common_logger_config(logger, config, incremental)
> File "C:\Python34\lib\logging\config.py", line 767, in
> common_logger_config
> self.add_handlers(logger, handlers)
> File "C:\Python34\lib\logging\config.py", line 748, in add_handlers
> for h in handlers:
> TypeError: 'StreamHandler' object is not iterable
>
> During handling of the above exception, another exception occurred:
>
> Traceback (most recent call last):
> File "L:\workspace\MyPython\src\testlog.py", line 27, in <module>
> logging.config.dictConfig(config)
> File "C:\Python34\lib\logging\config.py", line 789, in dictConfig
> dictConfigClass(config).configure()
> File "C:\Python34\lib\logging\config.py", line 614, in configure
> '%r: %s' % (name, e))
> ValueError: Unable to configure logger 'root': 'StreamHandler' object is
> not iterable
>
>
> I even tried creating a JSON file to create the dictionary, and got the
> same error.
>
> Thanks for any help
> --
> Tim
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