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<h1 id="logging-module">Logging Module</h1>
<h2 id="configuration">Configuration</h2>
<div class="highlight"><table class="highlighttable"><tr><th colspan="2" class="filename"><span class="filename">Python</span></th></tr><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"><a href="#__codelineno-0-1"> 1</a></span>
<span class="normal"><a href="#__codelineno-0-2"> 2</a></span>
<span class="normal"><a href="#__codelineno-0-3"> 3</a></span>
<span class="normal"><a href="#__codelineno-0-4"> 4</a></span>
<span class="normal"><a href="#__codelineno-0-5"> 5</a></span>
<span class="normal"><a href="#__codelineno-0-6"> 6</a></span>
<span class="normal"><a href="#__codelineno-0-7"> 7</a></span>
<span class="normal"><a href="#__codelineno-0-8"> 8</a></span>
<span class="normal"><a href="#__codelineno-0-9"> 9</a></span>
<span class="normal"><a href="#__codelineno-0-10">10</a></span>
<span class="normal"><a href="#__codelineno-0-11">11</a></span></pre></div></td><td class="code"><div><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1"></a><span class="c1"># basic configuration for the logging system</span>
<a id="__codelineno-0-2" name="__codelineno-0-2"></a><span class="n">logging</span><span class="o">.</span><span class="n">basicConfig</span><span class="p">(</span><span class="n">filename</span><span class="o">=</span><span class="s2">"relpath"</span><span class="p">,</span> <span class="n">level</span><span class="o">=</span><span class="n">logging</span><span class="o">.</span><span class="n">LOG_LEVEL</span><span class="p">,</span> <span class="nb">format</span><span class="o">=</span><span class="sa">f</span><span class="s2">"message format"</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<a id="__codelineno-0-3" name="__codelineno-0-3"></a><span class="c1"># DATEFMT: Use the specified date/time format, as accepted by time.strftime().</span>
<a id="__codelineno-0-4" name="__codelineno-0-4"></a>
<a id="__codelineno-0-5" name="__codelineno-0-5"></a><span class="c1"># create a logger with a name (useful for having multiple loggers)</span>
<a id="__codelineno-0-6" name="__codelineno-0-6"></a><span class="n">logger</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="s2">"logger name"</span><span class="p">)</span>
<a id="__codelineno-0-7" name="__codelineno-0-7"></a><span class="n">logger</span><span class="o">.</span><span class="n">level</span> <span class="c1"># LOG_LEVEL for this logger</span>
<a id="__codelineno-0-8" name="__codelineno-0-8"></a>
<a id="__codelineno-0-9" name="__codelineno-0-9"></a><span class="c1"># disable all logging calls of severity level and below</span>
<a id="__codelineno-0-10" name="__codelineno-0-10"></a><span class="c1"># alternative to basicConfig(level=logging.LOG_LEVEL)</span>
<a id="__codelineno-0-11" name="__codelineno-0-11"></a><span class="n">logging</span><span class="o">.</span><span class="n">disable</span><span class="p">(</span><span class="n">level</span><span class="o">=</span><span class="n">LOG_LEVEL</span><span class="p">)</span>
</code></pre></div></td></tr></table></div>
<h3 id="format-basicconfigformat">Format (<code>basicConfig(format="")</code>)</h3>
<table>
<thead>
<tr>
<th>Attribute name</th>
<th>Format</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td>asctime</td>
<td><code>%(asctime)s</code></td>
<td>Human-readable time when the LogRecord was created. Modified by <code>basicConfig(datefmt="")</code></td>
</tr>
<tr>
<td>created</td>
<td><code>%(created)f</code></td>
<td>Time when the LogRecord was created (as returned by <code>time.time()</code>).</td>
</tr>
<tr>
<td>filename</td>
<td><code>%(filename)s</code></td>
<td>Filename portion of pathname.</td>
</tr>
<tr>
<td>funcName</td>
<td><code>%(funcName)s</code></td>
<td>Name of function containing the logging call.</td>
</tr>
<tr>
<td>levelname</td>
<td><code>%(levelname)s</code></td>
<td>Text logging level for the message.</td>
</tr>
<tr>
<td>levelno</td>
<td><code>%(levelno)s</code></td>
<td>Numeric logging level for the message.</td>
</tr>
<tr>
<td>lineno</td>
<td><code>%(lineno)d</code></td>
<td>Source line number where the logging call was issued (if available).</td>
</tr>
<tr>
<td>message</td>
<td><code>%(message)s</code></td>
<td>The logged message, computed as <code>msg % args</code>.</td>
</tr>
<tr>
<td>module</td>
<td><code>%(module)s</code></td>
<td>Module (name portion of filename).</td>
</tr>
<tr>
<td>msecs</td>
<td><code>%(msecs)d</code></td>
<td>Millisecond portion of the time when the LogRecord was created.</td>
</tr>
<tr>
<td>name</td>
<td><code>%(name)s</code></td>
<td>Name of the logger used to log the call.</td>
</tr>
<tr>
<td>pathname</td>
<td><code>%(pathname)s</code></td>
<td>Full pathname of the source file where the logging call was issued (if available).</td>
</tr>
<tr>
<td>process</td>
<td><code>%(process)d</code></td>
<td>Process ID (if available).</td>
</tr>
<tr>
<td>processName</td>
<td><code>%(processName)s</code></td>
<td>Process name (if available).</td>
</tr>
<tr>
<td>thread</td>
<td><code>%(thread)d</code></td>
<td>Thread ID (if available).</td>
</tr>
<tr>
<td>threadName</td>
<td><code>%(threadName)s</code></td>
<td>Thread name (if available).</td>
</tr>
</tbody>
</table>
<h3 id="datefmt-basicconfigdatefmt">Datefmt (<code>basicConfig(datefmt="")</code>)</h3>
<table>
<thead>
<tr>
<th>Directive</th>
<th>Meaning</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>%a</code></td>
<td>Locale's abbreviated weekday name.</td>
</tr>
<tr>
<td><code>%A</code></td>
<td>Locale's full weekday name.</td>
</tr>
<tr>
<td><code>%b</code></td>
<td>Locale's abbreviated month name.</td>
</tr>
<tr>
<td><code>%B</code></td>
<td>Locale's full month name.</td>
</tr>
<tr>
<td><code>%c</code></td>
<td>Locale's appropriate date and time representation.</td>
</tr>
<tr>
<td><code>%d</code></td>
<td>Day of the month as a decimal number [01,31].</td>
</tr>
<tr>
<td><code>%H</code></td>
<td>Hour (24-hour clock) as a decimal number [00,23].</td>
</tr>
<tr>
<td><code>%I</code></td>
<td>Hour (12-hour clock) as a decimal number [01,12].</td>
</tr>
<tr>
<td><code>%j</code></td>
<td>Day of the year as a decimal number [001,366].</td>
</tr>
<tr>
<td><code>%m</code></td>
<td>Month as a decimal number [01,12].</td>
</tr>
<tr>
<td><code>%M</code></td>
<td>Minute as a decimal number [00,59].</td>
</tr>
<tr>
<td><code>%p</code></td>
<td>Locale's equivalent of either AM or PM.</td>
</tr>
<tr>
<td><code>%S</code></td>
<td>Second as a decimal number [00,61].</td>
</tr>
<tr>
<td><code>%U</code></td>
<td>Week number of the year (Sunday as the first day of the week) as a decimal number [00,53].</td>
</tr>
<tr>
<td><code>%w</code></td>
<td>Weekday as a decimal number [0(Sunday),6].</td>
</tr>
<tr>
<td><code>%W</code></td>
<td>Week number of the year (Monday as the first day of the week) as a decimal number [00,53].</td>
</tr>
<tr>
<td><code>%x</code></td>
<td>Locale's appropriate date representation.</td>
</tr>
<tr>
<td><code>%X</code></td>
<td>Locale's appropriate time representation.</td>
</tr>
<tr>
<td><code>%y</code></td>
<td>Year without century as a decimal number [00,99].</td>
</tr>
<tr>
<td><code>%Y</code></td>
<td>Year with century as a decimal number.</td>
</tr>
<tr>
<td><code>%z</code></td>
<td>Time zone offset indicating a positive or negative time difference from UTC/GMT of the form +HHMM or -HHMM [-23:59, +23:59].</td>
</tr>
<tr>
<td><code>%Z</code></td>
<td>Time zone name (no characters if no time zone exists).</td>
</tr>
<tr>
<td><code>%%</code></td>
<td>A literal '%' character.</td>
</tr>
</tbody>
</table>
<h2 id="logs">Logs</h2>
<p>Log Levels (Low To High):</p>
<ul>
<li>default: <code>0</code></li>
<li>debug: <code>10</code></li>
<li>info: <code>20</code></li>
<li>warning: <code>30</code></li>
<li>error: <code>40</code></li>
<li>critical: <code>50</code></li>
</ul>
<div class="highlight"><table class="highlighttable"><tr><th colspan="2" class="filename"><span class="filename">Python</span></th></tr><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"><a href="#__codelineno-1-1">1</a></span>
<span class="normal"><a href="#__codelineno-1-2">2</a></span>
<span class="normal"><a href="#__codelineno-1-3">3</a></span>
<span class="normal"><a href="#__codelineno-1-4">4</a></span>
<span class="normal"><a href="#__codelineno-1-5">5</a></span></pre></div></td><td class="code"><div><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1"></a><span class="n">logging</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="c1"># Logs a message with level DEBUG on the root logger</span>
<a id="__codelineno-1-2" name="__codelineno-1-2"></a><span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="c1"># Logs a message with level INFO on the root logger</span>
<a id="__codelineno-1-3" name="__codelineno-1-3"></a><span class="n">logging</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="c1"># Logs a message with level WARNING on the root logger</span>
<a id="__codelineno-1-4" name="__codelineno-1-4"></a><span class="n">logging</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="c1"># Logs a message with level ERROR on the root logger</span>
<a id="__codelineno-1-5" name="__codelineno-1-5"></a><span class="n">logging</span><span class="o">.</span><span class="n">critical</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span> <span class="c1"># Logs a message with level CRITICAL on the root logger</span>
</code></pre></div></td></tr></table></div>
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