[New-bugs-announce] [issue36318] Adding support for setting the "disabled" attribute of loggers from logging.config.dictConfig

[Géry]

New submission from Géry <gery.ogam at gmail.com>:

In the logging Python library, one can completely disable logging (for all levels) for a particular logger either by setting its `disabled` attribute to `True`, or by adding to it a `lambda record: False` filter, or by adding to it a `logging.NullHandler()` handler (to avoid the `logging.lastResort` handler) and setting its `propagate` attribute to `False` (to avoid log record propagation to its parent loggers):


import logging

# 1st solution
logging.getLogger("foo").disabled = True

# 2nd solution
logging.getLogger("foo").addFilter(lambda record: False)

# 3rd solution
logging.getLogger("foo").addHandler(logging.NullHandler())
logging.getLogger("foo").propagate = False


One can obtain the same logging configuration for the 2nd and 3rd solutions with the `logging.config.dictConfig` function:


import logging.config

# 2nd solution
logging.config.dictConfig({
    "version": 1,
    "filters": {
        "all": {
            "()": lambda: (lambda record: False)
        }
    },
    "loggers": {
        "foo": {
            "filters": ["all"]
        }
    }
})

# 3rd solution
logging.config.dictConfig({
    "version": 1,
    "handlers": {
        "null": {
            "class": "logging.NullHandler"
        }
    },
    "loggers": {
        "foo": {
            "handlers": ["null"],
            "propagate": False
        }
    }
})


However it is currently not possible for the 1st solution:


import logging.config

# 1st solution
logging.config.dictConfig({
    "version": 1,
    "loggers": {
        "foo": {
            "disabled": True
        }
    }
})

What do you think about adding this feature? I think it might be very convenient and improve consistency.

----------
components: Library (Lib)
messages: 338092
nosy: maggyero, vinay.sajip
priority: normal
severity: normal
status: open
title: Adding support for setting the "disabled" attribute of loggers from logging.config.dictConfig
type: enhancement
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36318>
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