<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8" /> <title>modulefinder — Find modules used by a script — Python 3.7.4 documentation</title> <link rel="stylesheet" href="../_static/pydoctheme.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <script type="text/javascript" src="../_static/language_data.js"></script> <script type="text/javascript" src="../_static/sidebar.js"></script> <link rel="search" type="application/opensearchdescription+xml" title="Search within Python 3.7.4 documentation" href="../_static/opensearch.xml"/> <link rel="author" title="About these documents" href="../about.html" /> <link rel="index" title="Index" href="../genindex.html" /> <link rel="search" title="Search" href="../search.html" /> <link rel="copyright" title="Copyright" href="../copyright.html" /> <link rel="next" title="runpy — Locating and executing Python modules" href="runpy.html" /> <link rel="prev" title="pkgutil — Package extension utility" href="pkgutil.html" /> <link rel="shortcut icon" type="image/png" href="../_static/py.png" /> <link rel="canonical" href="https://docs.python.org/3/library/modulefinder.html" /> <script type="text/javascript" src="../_static/copybutton.js"></script> <script type="text/javascript" src="../_static/switchers.js"></script> <style> @media only screen { table.full-width-table { width: 100%; 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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="method"> <dt id="modulefinder.ModuleFinder.report"> <code class="descname">report</code><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ModuleFinder.report" title="Permalink 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="method"> <dt id="modulefinder.ModuleFinder.run_script"> <code class="descname">run_script</code><span class="sig-paren">(</span><em>pathname</em><span class="sig-paren">)</span><a class="headerlink" href="#modulefinder.ModuleFinder.run_script" title="Permalink 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="attribute"> <dt id="modulefinder.ModuleFinder.modules"> <code class="descname">modules</code><a class="headerlink" href="#modulefinder.ModuleFinder.modules" title="Permalink 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> <div class="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="Permalink to this headline">¶</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="k">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">'bacon.py'</span><span class="p">)</span> <span class="nb">print</span><span class="p">(</span><span class="s1">'Loaded modules:'</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">'</span><span class="si">%s</span><span class="s1">: '</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">''</span><span class="p">)</span> <span class="nb">print</span><span class="p">(</span><span class="s1">','</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">'-'</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">'Modules not imported:'</span><span class="p">)</span> <span class="nb">print</span><span class="p">(</span><span class="s1">'</span><span class="se">\n</span><span class="s1">'</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">sre_compile</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">sre_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">sre_parse</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> </div> </div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table of Contents</a></h3> <ul> <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> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="pkgutil.html" title="previous chapter"><code class="xref py py-mod docutils literal notranslate"><span class="pre">pkgutil</span></code> — Package extension utility</a></p> <h4>Next topic</h4> <p class="topless"><a href="runpy.html" title="next chapter"><code class="xref py py-mod 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