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POPythonic way to log specific things to a file?
 

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  1. POPythonic way to log specific things to a file?
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    <p>I understand that Python loggers cannot be instantiated directly, as the documentation suggests:</p> <blockquote> <p>Note that Loggers are never instantiated directly, but always through the module-level function <code>logging.getLogger(name)</code></p> </blockquote> <p>.. which is reasonable, as you are expected <em>not</em> to create logger objects for every class/module for there is a <a href="https://stackoverflow.com/questions/401277/naming-python-loggers/402471#402471">better alternative</a>.</p> <p>However, there are cases where I want to <em>create</em> a logger object and attach a file to it exclusively for logging some app-specific output to that file; and then close the log file.</p> <p>For instance, I have a program that builds all packages in <a href="http://pypi.python.org/" rel="nofollow noreferrer">PyPI</a>. So basically assume there is a <code>for</code> loop going over every package. Inside the loop, I want to "create" a logger, attach a file handler (eg: /var/logs/pypi/django/20090302_1324.build.log and send the output of <code>python setup.py build</code> (along with other things) to this log file. Once that is done, I want to close/destroy the logger and <code>continue</code> building other packages in similar fashion.</p> <p>So you see .. the normal Pythonic way of calling <code>logging.getLogger</code> does not apply here. One needs to create <strong>temporary</strong> logger objects. </p> <p>Currently, I achieve this by passing the file name itself as the logger name:</p> <pre><code>&gt;&gt;&gt; packagelog = logging.getLogger('/var/..../..34.log') &gt;&gt;&gt; # attach handler, etc.. </code></pre> <p>I want to ask .. is there a better way to do this?</p>
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    1. USSridhar Ratnakumar
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    1. COAre you calling out to `python setup.py build` as a subprocess?
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      1. UScdleary
    2. CO@cdleary, yes, of course. and send its output (among other things) to this log file.
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      1. USSridhar Ratnakumar
 

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