CODEWITHSUNDEEP
pythonloggingparamiko
David542
David542

Reputation: 110562

How to disable a particular module for logging

I have logging set up at the INFO level. However, I want to remove all logs from a particular module, regardless of level:

[:pid:8229 2021-06-14 19:32:06,827] - INFO paramiko.transport:_log:L1819: Connected (version 2.0, client OpenSSH_7.6p1)
[:pid:8229 2021-06-14 19:32:06,846] - INFO paramiko.transport:_log:L1819: Authentication (publickey) successful!

How would I do the equivalent of the following?

logger = logging.getLogger(self.script_name)
logger.setLevel(logging.INFO)
logger.disableLogger(paramiko) # pseudocode

I suppose one option is doing something like:

logging.getLogger("paramiko").setLevel(logging.ERROR)

Upvotes: 2

Views: 4457

Answers (1)

Stephen
Stephen

Reputation: 1528

The logging module has no concept of module-level loggers, as every logger is just established in a hierarchy based on name. paramiko.transport will always exist as a child logger of the paramiko logger by name, not by any module association. Because of this, there isn't really a good way to disable logging by module itself, but you can effectively disable logging for that logger and all child loggers by doing something like logging.getLogger('paramiko').setLevel(logging.CRITICAL+1), since every log message should propagate with a logging level that will be lower than this value, it will cause any log message to drop out before reaching a handler attached to the root logger.

Another question was raised about disabling all logging and then selectively enabling logging where needed. To achieve something like this, the quickest method would be to exclude the addition of any handlers to the root logger, and then add handlers in a "bottom-up" fashion. The reason you would want to do this is because if you end up attaching a handler to a logger that is the child of a logger that the handler has already been attached to, you will get duplicate logging messages, which is definitely of note.

Upvotes: 3

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