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<li><a class="reference internal" href="#"><code class="xref py py-mod docutils literal notranslate"><span class="pre">modulefinder</span></code> — Find modules used by a script</a><ul>
<li><a class="reference internal" href="#example-usage-of-modulefinder">Example usage of <code class="xref py py-class docutils literal notranslate"><span class="pre">ModuleFinder</span></code></a></li>
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  <section id="module-modulefinder">
<span id="modulefinder-find-modules-used-by-a-script"></span><h1><a class="reference internal" href="#module-modulefinder" title="modulefinder: Find modules used by a script."><code class="xref py py-mod docutils literal notranslate"><span class="pre">modulefinder</span></code></a> — Find modules used by a script<a class="headerlink" href="#module-modulefinder" title="Link to this heading">¶</a></h1>
<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.12/Lib/modulefinder.py">Lib/modulefinder.py</a></p>
<hr class="docutils" />
<p>This module provides a <a class="reference internal" href="#modulefinder.ModuleFinder" title="modulefinder.ModuleFinder"><code class="xref py py-class docutils literal notranslate"><span class="pre">ModuleFinder</span></code></a> class that can be used to determine
the set of modules imported by a script. <code class="docutils literal notranslate"><span class="pre">modulefinder.py</span></code> can also be run as
a script, giving the filename of a Python script as its argument, after which a
report of the imported modules will be printed.</p>
<dl class="py function">
<dt class="sig sig-object py" id="modulefinder.AddPackagePath">
<span class="sig-prename descclassname"><span class="pre">modulefinder.</span></span><span class="sig-name descname"><span class="pre">AddPackagePath</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pkg_name</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">path</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.AddPackagePath" title="Link to this definition">¶</a></dt>
<dd><p>Record that the package named <em>pkg_name</em> can be found in the specified <em>path</em>.</p>
</dd></dl>

<dl class="py function">
<dt class="sig sig-object py" id="modulefinder.ReplacePackage">
<span class="sig-prename descclassname"><span class="pre">modulefinder.</span></span><span class="sig-name descname"><span class="pre">ReplacePackage</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">oldname</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">newname</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ReplacePackage" title="Link to this definition">¶</a></dt>
<dd><p>Allows specifying that the module named <em>oldname</em> is in fact the package named
<em>newname</em>.</p>
</dd></dl>

<dl class="py class">
<dt class="sig sig-object py" id="modulefinder.ModuleFinder">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">modulefinder.</span></span><span class="sig-name descname"><span class="pre">ModuleFinder</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">path</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">debug</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">excludes</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">[]</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">replace_paths</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">[]</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ModuleFinder" title="Link to this definition">¶</a></dt>
<dd><p>This class provides <a class="reference internal" href="#modulefinder.ModuleFinder.run_script" title="modulefinder.ModuleFinder.run_script"><code class="xref py py-meth docutils literal notranslate"><span class="pre">run_script()</span></code></a> and <a class="reference internal" href="#modulefinder.ModuleFinder.report" title="modulefinder.ModuleFinder.report"><code class="xref py py-meth docutils literal notranslate"><span class="pre">report()</span></code></a> methods to determine
the set of modules imported by a script. <em>path</em> can be a list of directories to
search for modules; if not specified, <code class="docutils literal notranslate"><span class="pre">sys.path</span></code> is used.  <em>debug</em> sets the
debugging level; higher values make the class print debugging messages about
what it’s doing. <em>excludes</em> is a list of module names to exclude from the
analysis. <em>replace_paths</em> is a list of <code class="docutils literal notranslate"><span class="pre">(oldpath,</span> <span class="pre">newpath)</span></code> tuples that will
be replaced in module paths.</p>
<dl class="py method">
<dt class="sig sig-object py" id="modulefinder.ModuleFinder.report">
<span class="sig-name descname"><span class="pre">report</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ModuleFinder.report" title="Link to this definition">¶</a></dt>
<dd><p>Print a report to standard output that lists the modules imported by the
script and their paths, as well as modules that are missing or seem to be
missing.</p>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="modulefinder.ModuleFinder.run_script">
<span class="sig-name descname"><span class="pre">run_script</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pathname</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ModuleFinder.run_script" title="Link to this definition">¶</a></dt>
<dd><p>Analyze the contents of the <em>pathname</em> file, which must contain Python
code.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="modulefinder.ModuleFinder.modules">
<span class="sig-name descname"><span class="pre">modules</span></span><a class="headerlink" href="#modulefinder.ModuleFinder.modules" title="Link to this definition">¶</a></dt>
<dd><p>A dictionary mapping module names to modules. See
<a class="reference internal" href="#modulefinder-example"><span class="std std-ref">Example usage of ModuleFinder</span></a>.</p>
</dd></dl>

</dd></dl>

<section id="example-usage-of-modulefinder">
<span id="modulefinder-example"></span><h2>Example usage of <a class="reference internal" href="#modulefinder.ModuleFinder" title="modulefinder.ModuleFinder"><code class="xref py py-class docutils literal notranslate"><span class="pre">ModuleFinder</span></code></a><a class="headerlink" href="#example-usage-of-modulefinder" title="Link to this heading">¶</a></h2>
<p>The script that is going to get analyzed later on (bacon.py):</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">re</span><span class="o">,</span> <span class="nn">itertools</span>

<span class="k">try</span><span class="p">:</span>
    <span class="kn">import</span> <span class="nn">baconhameggs</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
    <span class="k">pass</span>

<span class="k">try</span><span class="p">:</span>
    <span class="kn">import</span> <span class="nn">guido.python.ham</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span>
    <span class="k">pass</span>
</pre></div>
</div>
<p>The script that will output the report of bacon.py:</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">modulefinder</span> <span class="kn">import</span> <span class="n">ModuleFinder</span>

<span class="n">finder</span> <span class="o">=</span> <span class="n">ModuleFinder</span><span class="p">()</span>
<span class="n">finder</span><span class="o">.</span><span class="n">run_script</span><span class="p">(</span><span class="s1">&#39;bacon.py&#39;</span><span class="p">)</span>

<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;Loaded modules:&#39;</span><span class="p">)</span>
<span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">mod</span> <span class="ow">in</span> <span class="n">finder</span><span class="o">.</span><span class="n">modules</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
    <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;</span><span class="si">%s</span><span class="s1">: &#39;</span> <span class="o">%</span> <span class="n">name</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s1">&#39;&#39;</span><span class="p">)</span>
    <span class="nb">print</span><span class="p">(</span><span class="s1">&#39;,&#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">mod</span><span class="o">.</span><span class="n">globalnames</span><span class="o">.</span><span class="n">keys</span><span class="p">())[:</span><span class="mi">3</span><span class="p">]))</span>

<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="o">*</span><span class="mi">50</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;Modules not imported:&#39;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s1">&#39;</span><span class="se">\n</span><span class="s1">&#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">finder</span><span class="o">.</span><span class="n">badmodules</span><span class="o">.</span><span class="n">keys</span><span class="p">()))</span>
</pre></div>
</div>
<p>Sample output (may vary depending on the architecture):</p>
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="n">Loaded</span> <span class="n">modules</span><span class="p">:</span>
<span class="n">_types</span><span class="p">:</span>
<span class="n">copyreg</span><span class="p">:</span>  <span class="n">_inverted_registry</span><span class="p">,</span><span class="n">_slotnames</span><span class="p">,</span><span class="n">__all__</span>
<span class="n">re</span><span class="o">.</span><span class="n">_compiler</span><span class="p">:</span>  <span class="n">isstring</span><span class="p">,</span><span class="n">_sre</span><span class="p">,</span><span class="n">_optimize_unicode</span>
<span class="n">_sre</span><span class="p">:</span>
<span class="n">re</span><span class="o">.</span><span class="n">_constants</span><span class="p">:</span>  <span class="n">REPEAT_ONE</span><span class="p">,</span><span class="n">makedict</span><span class="p">,</span><span class="n">AT_END_LINE</span>
<span class="n">sys</span><span class="p">:</span>
<span class="n">re</span><span class="p">:</span>  <span class="vm">__module__</span><span class="p">,</span><span class="n">finditer</span><span class="p">,</span><span class="n">_expand</span>
<span class="n">itertools</span><span class="p">:</span>
<span class="n">__main__</span><span class="p">:</span>  <span class="n">re</span><span class="p">,</span><span class="n">itertools</span><span class="p">,</span><span class="n">baconhameggs</span>
<span class="n">re</span><span class="o">.</span><span class="n">_parser</span><span class="p">:</span>  <span class="n">_PATTERNENDERS</span><span class="p">,</span><span class="n">SRE_FLAG_UNICODE</span>
<span class="n">array</span><span class="p">:</span>
<span class="n">types</span><span class="p">:</span>  <span class="vm">__module__</span><span class="p">,</span><span class="n">IntType</span><span class="p">,</span><span class="n">TypeType</span>
<span class="o">---------------------------------------------------</span>
<span class="n">Modules</span> <span class="ow">not</span> <span class="n">imported</span><span class="p">:</span>
<span class="n">guido</span><span class="o">.</span><span class="n">python</span><span class="o">.</span><span class="n">ham</span>
<span class="n">baconhameggs</span>
</pre></div>
</div>
</section>
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<li><a class="reference internal" href="#example-usage-of-modulefinder">Example usage of <code class="xref py py-class docutils literal notranslate"><span class="pre">ModuleFinder</span></code></a></li>
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