CODEWITHSUNDEEP
pythonpython-3.xexceptionlogging
flow2k
flow2k

Reputation: 4357

Python exception handling of logging itself

While I use logging to record exceptions, it occurred to me the methods of the logging library itself can throw exceptions.

For example, if a "bad" path is set for the log file, like

import logging
logging.basicConfig(filename='/bad/path/foo.log')

a FileNotFoundError will be thrown.

Suppose my goal of handling these logging exceptions is to keep the program running (and not exit, which the program would otherwise do). The first thing that comes to mind is

try:
    logging.basicConfig(filename='/bad/path/foo.log')
except Exception:
    pass

But this is considered by some to be an antipattern. It's also quite ugly to wrap every logging.error with try and except blocks.

What's a good pattern to handle exceptions thrown by logging methods like basicConfig(), and possibly by debug(), error(), etc.?

Upvotes: 0

Views: 176

Answers (1)

NotAName
NotAName

Reputation: 4357

Unless you re-initialise your logger mid-way through your code, why not just check whether the file exists during logger initialisation:

import os

if os.path.isfile(filename):

    # Initialise the logger

This should work normally, unless of course some part of the later code will attemp to delete the file, but I hope that it's not the case.

Upvotes: 1

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