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<a href="https://github.com/d3vyce/fastapi-toolsets/raw/master/docs/reference/logger.md" title="View source of this page" class="md-content__button md-icon">
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<h1 id="logger"><code>logger</code><a class="headerlink" href="#logger" title="Permanent link">&para;</a></h1>
<p>Here's the reference for the logging utilities.</p>
<p>You can import them directly from <code>fastapi_toolsets.logger</code>:</p>
<div class="language-python highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi_toolsets.logger</span><span class="w"> </span><span class="kn">import</span> <span class="n">configure_logging</span><span class="p">,</span> <span class="n">get_logger</span>
</span></code></pre></div>
<div class="doc doc-object doc-function">
<h2 id="fastapi_toolsets.logger.configure_logging" class="doc doc-heading">
<code class="highlight language-python"><span class="n">fastapi_toolsets</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">configure_logging</span><span class="p">(</span><span class="n">level</span><span class="o">=</span><span class="s1">&#39;INFO&#39;</span><span class="p">,</span> <span class="n">fmt</span><span class="o">=</span><span class="n">DEFAULT_FORMAT</span><span class="p">,</span> <span class="n">logger_name</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span></code>
<a href="#fastapi_toolsets.logger.configure_logging" class="headerlink" title="Permanent link">&para;</a></h2>
<div class="doc doc-contents first">
<p>Configure logging with a stdout handler and consistent format.</p>
<p>Sets up a :class:<code>~logging.StreamHandler</code> writing to stdout with the
given format and level. Also configures the uvicorn loggers so that
FastAPI access logs use the same format.</p>
<p>Calling this function multiple times is safe -- existing handlers are
replaced rather than duplicated.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code>level</code>
</td>
<td>
<code><span title="fastapi_toolsets.logger.LogLevel">LogLevel</span> | <a class="autorefs autorefs-external" href="https://docs.python.org/3/library/functions.html#int">int</a></code>
</td>
<td>
<div class="doc-md-description">
<p>Log level (e.g. <code>"DEBUG"</code>, <code>"INFO"</code>, or <code>logging.DEBUG</code>).</p>
</div>
</td>
<td>
<code>&#39;INFO&#39;</code>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code>fmt</code>
</td>
<td>
<code><a class="autorefs autorefs-external" href="https://docs.python.org/3/library/stdtypes.html#str">str</a></code>
</td>
<td>
<div class="doc-md-description">
<p>Log format string. Defaults to
<code>"%(asctime)s - %(name)s - %(levelname)s - %(message)s"</code>.</p>
</div>
</td>
<td>
<code><span title="fastapi_toolsets.logger.DEFAULT_FORMAT">DEFAULT_FORMAT</span></code>
</td>
</tr>
<tr class="doc-section-item">
<td>
<code>logger_name</code>
</td>
<td>
<code><a class="autorefs autorefs-external" href="https://docs.python.org/3/library/stdtypes.html#str">str</a> | None</code>
</td>
<td>
<div class="doc-md-description">
<p>Logger name to configure. <code>None</code> (the default)
configures the root logger so all loggers inherit the settings.</p>
</div>
</td>
<td>
<code>None</code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-external" title="logging.Logger" href="https://docs.python.org/3/library/logging.html#logging.Logger">Logger</a></code>
</td>
<td>
<div class="doc-md-description">
<p>The configured Logger instance.</p>
</div>
</td>
</tr>
</tbody>
</table>
<details class="example" open>
<summary>Example</summary>
<div class="language-python highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi_toolsets.logger</span><span class="w"> </span><span class="kn">import</span> <span class="n">configure_logging</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="n">logger</span> <span class="o">=</span> <span class="n">configure_logging</span><span class="p">(</span><span class="s2">&quot;DEBUG&quot;</span><span class="p">)</span>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">&quot;Application started&quot;</span><span class="p">)</span>
</span></code></pre></div>
</details>
</div>
</div>
<div class="doc doc-object doc-function">
<h2 id="fastapi_toolsets.logger.get_logger" class="doc doc-heading">
<code class="highlight language-python"><span class="n">fastapi_toolsets</span><span class="o">.</span><span class="n">logger</span><span class="o">.</span><span class="n">get_logger</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="n">_SENTINEL</span><span class="p">)</span></code>
<a href="#fastapi_toolsets.logger.get_logger" class="headerlink" title="Permanent link">&para;</a></h2>
<div class="doc doc-contents first">
<p>Return a logger with the given <em>name</em>.</p>
<p>A thin convenience wrapper around :func:<code>logging.getLogger</code> that keeps
logging imports consistent across the codebase.</p>
<p>When called without arguments, the caller's <code>__name__</code> is used
automatically, so <code>get_logger()</code> in a module is equivalent to
<code>logging.getLogger(__name__)</code>. Pass <code>None</code> explicitly to get the
root logger.</p>
<p><span class="doc-section-title">Parameters:</span></p>
<table>
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Description</th>
<th>Default</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code>name</code>
</td>
<td>
<code><a class="autorefs autorefs-external" href="https://docs.python.org/3/library/stdtypes.html#str">str</a> | None</code>
</td>
<td>
<div class="doc-md-description">
<p>Logger name. Defaults to the caller's <code>__name__</code>.
Pass <code>None</code> to get the root logger.</p>
</div>
</td>
<td>
<code><span title="fastapi_toolsets.logger._SENTINEL">_SENTINEL</span></code>
</td>
</tr>
</tbody>
</table>
<p><span class="doc-section-title">Returns:</span></p>
<table>
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr class="doc-section-item">
<td>
<code><a class="autorefs autorefs-external" title="logging.Logger" href="https://docs.python.org/3/library/logging.html#logging.Logger">Logger</a></code>
</td>
<td>
<div class="doc-md-description">
<p>A Logger instance.</p>
</div>
</td>
</tr>
</tbody>
</table>
<details class="example" open>
<summary>Example</summary>
<div class="language-python highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">fastapi_toolsets.logger</span><span class="w"> </span><span class="kn">import</span> <span class="n">get_logger</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a><span class="n">logger</span> <span class="o">=</span> <span class="n">get_logger</span><span class="p">()</span> <span class="c1"># uses caller&#39;s __name__</span>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="n">logger</span> <span class="o">=</span> <span class="n">get_logger</span><span class="p">(</span><span class="s2">&quot;myapp&quot;</span><span class="p">)</span> <span class="c1"># explicit name</span>
</span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="n">logger</span> <span class="o">=</span> <span class="n">get_logger</span><span class="p">(</span><span class="kc">None</span><span class="p">)</span> <span class="c1"># root logger</span>
</span></code></pre></div>
</details>
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