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POAdding custom handler to Python logging module without a logger instance?
 

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  1. POAdding custom handler to Python logging module without a logger instance?
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    <p>This is a follow-up question to the answer <a href="https://stackoverflow.com/questions/14349563/how-to-get-non-blocking-real-time-behavior-from-python-logging-module-output-t/14353888#14353888">How to get non-blocking/real-time behavior from Python logging module? (output to PyQt QTextBrowser)</a> provided by <a href="https://stackoverflow.com/users/1006989/x-jacobs">X.Jacobs</a>.</p> <p>In the Python logging module, the normal method of adding a custom handler is to define a handler class that inherits from <code>logging.Handler</code> (we'll call this <code>CustomLogHandler</code>). To attach it to <code>logging</code> process, we typically do this:</p> <pre><code>import logging class CustomLogHandler(logging.Handler): ... (some code here)... logger = logging.getLogger() logger.addHandler(CustomLogHandler) </code></pre> <p>where <code>addHandler</code> is a method of the <code>logger</code> instance. </p> <p><strong>Question</strong>: Suppose we <strong>didn't</strong> want to get a <code>logger</code> (i.e. we <strong>don't want</strong> to do the above). Is is possible to attach the <code>CustomLogHandler</code> to <code>logging</code> itself?</p> <p>See comments in <a href="https://stackoverflow.com/questions/14349563/how-to-get-non-blocking-real-time-behavior-from-python-logging-module-output-t/14353888#14353888">How to get non-blocking/real-time behavior from Python logging module? (output to PyQt QTextBrowser)</a> for context.</p> <p>The premise is that it is possible to use custom handlers without any reference to the <code>logger</code> instance.</p>
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    1. USGilead
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    1. COWhat do you expect to happen when you 'attach the `CustomLogHandler` to `logging` itself'?
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      1. POAdding custom handler to Python logging module without a logger instance?
      1. USMartijn Pieters
    2. COI'm looking to use `logging.error()` instead of `logger.error()`.
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      1. USGilead
    3. COI'm not sure why this got downvoted (by whomever it is) -- the question is a reasonable one. The answer given is also the correct one.
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