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  <div class="section" id="debugging-and-profiling">
<h1>27. Debugging and Profiling<a class="headerlink" href="#debugging-and-profiling" title="Permalink to this headline">¶</a></h1>
<p>These libraries help you with Python development: the debugger enables you to
step through code, analyze stack frames and set breakpoints etc., and the
profilers run code and give you a detailed breakdown of execution times,
allowing you to identify bottlenecks in your programs.</p>
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<li class="toctree-l1"><a class="reference internal" href="bdb.html">27.1. <code class="docutils literal notranslate"><span class="pre">bdb</span></code> — Debugger framework</a></li>
<li class="toctree-l1"><a class="reference internal" href="faulthandler.html">27.2. <code class="docutils literal notranslate"><span class="pre">faulthandler</span></code> — Dump the Python traceback</a><ul>
<li class="toctree-l2"><a class="reference internal" href="faulthandler.html#dumping-the-traceback">27.2.1. Dumping the traceback</a></li>
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<li class="toctree-l1"><a class="reference internal" href="pdb.html">27.3. <code class="docutils literal notranslate"><span class="pre">pdb</span></code> — The Python Debugger</a><ul>
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<li class="toctree-l1"><a class="reference internal" href="timeit.html">27.5. <code class="docutils literal notranslate"><span class="pre">timeit</span></code> — Measure execution time of small code snippets</a><ul>
<li class="toctree-l2"><a class="reference internal" href="timeit.html#basic-examples">27.5.1. Basic Examples</a></li>
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<li class="toctree-l1"><a class="reference internal" href="tracemalloc.html">27.7. <code class="docutils literal notranslate"><span class="pre">tracemalloc</span></code> — Trace memory allocations</a><ul>
<li class="toctree-l2"><a class="reference internal" href="tracemalloc.html#examples">27.7.1. Examples</a><ul>
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<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#get-the-traceback-of-a-memory-block">27.7.1.3. Get the traceback of a memory block</a></li>
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<li class="toctree-l2"><a class="reference internal" href="tracemalloc.html#api">27.7.2. API</a><ul>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#functions">27.7.2.1. Functions</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#domainfilter">27.7.2.2. DomainFilter</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#filter">27.7.2.3. Filter</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#frame">27.7.2.4. Frame</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#snapshot">27.7.2.5. Snapshot</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#statistic">27.7.2.6. Statistic</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#statisticdiff">27.7.2.7. StatisticDiff</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#trace">27.7.2.8. Trace</a></li>
<li class="toctree-l3"><a class="reference internal" href="tracemalloc.html#traceback">27.7.2.9. Traceback</a></li>
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