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<li class="nav-item nav-item-this"><a href=""><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code> — Traceback manager for CGI scripts</a></li>
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<section id="module-cgitb">
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<span id="cgitb-traceback-manager-for-cgi-scripts"></span><h1><a class="reference internal" href="#module-cgitb" title="cgitb: Configurable traceback handler for CGI scripts. (deprecated)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code></a> — Traceback manager for CGI scripts<a class="headerlink" href="#module-cgitb" title="Permalink to this headline">¶</a></h1>
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<p><strong>Source code:</strong> <a class="reference external" href="https://github.com/python/cpython/tree/3.12/Lib/cgitb.py">Lib/cgitb.py</a></p>
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<div class="deprecated-removed" id="index-0">
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<p><span class="versionmodified">Deprecated since version 3.11, will be removed in version 3.13: </span>The <a class="reference internal" href="#module-cgitb" title="cgitb: Configurable traceback handler for CGI scripts. (deprecated)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code></a> module is deprecated
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(see <span class="target" id="index-1"></span><a class="pep reference external" href="https://peps.python.org/pep-0594/#cgitb"><strong>PEP 594</strong></a> for details).</p>
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<hr class="docutils" />
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<p>The <a class="reference internal" href="#module-cgitb" title="cgitb: Configurable traceback handler for CGI scripts. (deprecated)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code></a> module provides a special exception handler for Python scripts.
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||
(Its name is a bit misleading. It was originally designed to display extensive
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||
traceback information in HTML for CGI scripts. It was later generalized to also
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display this information in plain text.) After this module is activated, if an
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uncaught exception occurs, a detailed, formatted report will be displayed. The
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report includes a traceback showing excerpts of the source code for each level,
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as well as the values of the arguments and local variables to currently running
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functions, to help you debug the problem. Optionally, you can save this
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information to a file instead of sending it to the browser.</p>
|
||
<p>To enable this feature, simply add this to the top of your CGI script:</p>
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||
<div class="highlight-python3 notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">cgitb</span>
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<span class="n">cgitb</span><span class="o">.</span><span class="n">enable</span><span class="p">()</span>
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</pre></div>
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</div>
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<p>The options to the <a class="reference internal" href="#cgitb.enable" title="cgitb.enable"><code class="xref py py-func docutils literal notranslate"><span class="pre">enable()</span></code></a> function control whether the report is
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||
displayed in the browser and whether the report is logged to a file for later
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analysis.</p>
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<dl class="py function">
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<dt class="sig sig-object py" id="cgitb.enable">
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<span class="sig-prename descclassname"><span class="pre">cgitb.</span></span><span class="sig-name descname"><span class="pre">enable</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">display</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">logdir</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">context</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">5</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">format</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">'html'</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#cgitb.enable" title="Permalink to this definition">¶</a></dt>
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<dd><p id="index-2">This function causes the <a class="reference internal" href="#module-cgitb" title="cgitb: Configurable traceback handler for CGI scripts. (deprecated)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code></a> module to take over the interpreter’s
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default handling for exceptions by setting the value of <a class="reference internal" href="sys.html#sys.excepthook" title="sys.excepthook"><code class="xref py py-attr docutils literal notranslate"><span class="pre">sys.excepthook</span></code></a>.</p>
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<p>The optional argument <em>display</em> defaults to <code class="docutils literal notranslate"><span class="pre">1</span></code> and can be set to <code class="docutils literal notranslate"><span class="pre">0</span></code> to
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suppress sending the traceback to the browser. If the argument <em>logdir</em> is
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present, the traceback reports are written to files. The value of <em>logdir</em>
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should be a directory where these files will be placed. The optional argument
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<em>context</em> is the number of lines of context to display around the current line
|
||
of source code in the traceback; this defaults to <code class="docutils literal notranslate"><span class="pre">5</span></code>. If the optional
|
||
argument <em>format</em> is <code class="docutils literal notranslate"><span class="pre">"html"</span></code>, the output is formatted as HTML. Any other
|
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value forces plain text output. The default value is <code class="docutils literal notranslate"><span class="pre">"html"</span></code>.</p>
|
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="cgitb.text">
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<span class="sig-prename descclassname"><span class="pre">cgitb.</span></span><span class="sig-name descname"><span class="pre">text</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">info</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">context</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">5</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#cgitb.text" title="Permalink to this definition">¶</a></dt>
|
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<dd><p>This function handles the exception described by <em>info</em> (a 3-tuple containing
|
||
the result of <a class="reference internal" href="sys.html#sys.exc_info" title="sys.exc_info"><code class="xref py py-func docutils literal notranslate"><span class="pre">sys.exc_info()</span></code></a>), formatting its traceback as text and
|
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returning the result as a string. The optional argument <em>context</em> is the
|
||
number of lines of context to display around the current line of source code
|
||
in the traceback; this defaults to <code class="docutils literal notranslate"><span class="pre">5</span></code>.</p>
|
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</dd></dl>
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||
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<dl class="py function">
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<dt class="sig sig-object py" id="cgitb.html">
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<span class="sig-prename descclassname"><span class="pre">cgitb.</span></span><span class="sig-name descname"><span class="pre">html</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">info</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">context</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">5</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#cgitb.html" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>This function handles the exception described by <em>info</em> (a 3-tuple containing
|
||
the result of <a class="reference internal" href="sys.html#sys.exc_info" title="sys.exc_info"><code class="xref py py-func docutils literal notranslate"><span class="pre">sys.exc_info()</span></code></a>), formatting its traceback as HTML and
|
||
returning the result as a string. The optional argument <em>context</em> is the
|
||
number of lines of context to display around the current line of source code
|
||
in the traceback; this defaults to <code class="docutils literal notranslate"><span class="pre">5</span></code>.</p>
|
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</dd></dl>
|
||
|
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<dl class="py function">
|
||
<dt class="sig sig-object py" id="cgitb.handler">
|
||
<span class="sig-prename descclassname"><span class="pre">cgitb.</span></span><span class="sig-name descname"><span class="pre">handler</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">info</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#cgitb.handler" title="Permalink to this definition">¶</a></dt>
|
||
<dd><p>This function handles an exception using the default settings (that is, show a
|
||
report in the browser, but don’t log to a file). This can be used when you’ve
|
||
caught an exception and want to report it using <a class="reference internal" href="#module-cgitb" title="cgitb: Configurable traceback handler for CGI scripts. (deprecated)"><code class="xref py py-mod docutils literal notranslate"><span class="pre">cgitb</span></code></a>. The optional
|
||
<em>info</em> argument should be a 3-tuple containing an exception type, exception
|
||
value, and traceback object, exactly like the tuple returned by
|
||
<a class="reference internal" href="sys.html#sys.exc_info" title="sys.exc_info"><code class="xref py py-func docutils literal notranslate"><span class="pre">sys.exc_info()</span></code></a>. If the <em>info</em> argument is not supplied, the current
|
||
exception is obtained from <a class="reference internal" href="sys.html#sys.exc_info" title="sys.exc_info"><code class="xref py py-func docutils literal notranslate"><span class="pre">sys.exc_info()</span></code></a>.</p>
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