Using dictConfig() with variable log file name

Question

I have configuration dictionary for python scripts that I import from another module like below

LOG_CONFIG = {
'version': 1,
'disable_existing_loggers': False,
'loggers': {
        '': {
        'handlers': ['consoleHandler', 'fileHandler'],
        'level': 'DEBUG'
    }
},
'handlers': {
    'consoleHandler': {
        'level': 'INFO',
        'formatter': 'consoleFormatter',
        'class': 'logging.StreamHandler',
        'stream': 'ext://sys.stdout',
    },
    'fileHandler': {
        'level': 'INFO',
        'formatter': 'fileFormatter',
        'class': 'logging.FileHandler',
        'mode': 'w',
    }
},
'formatters': {
    'fileFormatter': {
        'format': '%(asctime)s - %(levelname)s -  %(name)s - %(module)s - %(funcName)s - %(message)s',
                    'datefmt': '%Y-%m-%d %H:%M:%S',
                    'class': 'logging.Formatter'
    },
    'consoleFormatter': {
        'format': 'UAC_API>> %(levelname)s - %(message)s'
    },
},

}

I want log filename to be variable. When loading configuration from a file, I used:

logging.config.fileConfig(config_file,
                          defaults={'logfilename': logfullpath},
                          disable_existing_loggers=False)

Where logfullpath is path to the log file.

But defaults={'logfilename': logfullpath} does not work with dictConfig (comparing to logging.config.fileConfig has just one agument). Would anybody help me with that please?

Could you expand on "does not work? Where does logfullpath come from, and where is logfilename supposed to be going? Give a minimal reproducible example. — jonrsharpe
– jonrsharpe, Commented May 29, 2020 at 17:07
I specified the description more, thought It would be clear from the context, I found the workaround in the meanwhile — JanFi86
– JanFi86, Commented Jun 2, 2020 at 12:55

JanFi86 · Accepted Answer · 2020-06-02 12:59:45Z

5

Found a workaround if anyone has the same problem. Since the LOG_CONFIG is the dictionary I expanded it like can be seen below (added filename:logfullpath as key value pair for fileHandler). Then I used it as argument for dictConfig.

LOG_CONFIG['handlers']['fileHandler']['filename'] = logfullpath

logging.config.dictConfig(LOG_CONFIG)

answered Jun 2, 2020 at 12:59

JanFi86

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