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<div class="section" id="module-tabnanny">
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<span id="tabnanny-detection-of-ambiguous-indentation"></span><h1>32.8. <a class="reference internal" href="#module-tabnanny" title="tabnanny: Tool for detecting white space related problems in Python source files in a directory tree."><code class="xref py py-mod docutils literal"><span class="pre">tabnanny</span></code></a> — Detection of ambiguous indentation<a class="headerlink" href="#module-tabnanny" title="Permalink to this headline">¶</a></h1>
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<p><strong>Source code:</strong> <a class="reference external" href="https://hg.python.org/cpython/file/3.5/Lib/tabnanny.py">Lib/tabnanny.py</a></p>
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<hr class="docutils" />
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<p>For the time being this module is intended to be called as a script. However it
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is possible to import it into an IDE and use the function <a class="reference internal" href="#tabnanny.check" title="tabnanny.check"><code class="xref py py-func docutils literal"><span class="pre">check()</span></code></a>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p class="last">The API provided by this module is likely to change in future releases; such
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changes may not be backward compatible.</p>
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<dt id="tabnanny.check">
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<code class="descclassname">tabnanny.</code><code class="descname">check</code><span class="sig-paren">(</span><em>file_or_dir</em><span class="sig-paren">)</span><a class="headerlink" href="#tabnanny.check" title="Permalink to this definition">¶</a></dt>
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<dd><p>If <em>file_or_dir</em> is a directory and not a symbolic link, then recursively
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descend the directory tree named by <em>file_or_dir</em>, checking all <code class="file docutils literal"><span class="pre">.py</span></code>
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files along the way. If <em>file_or_dir</em> is an ordinary Python source file, it
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is checked for whitespace related problems. The diagnostic messages are
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written to standard output using the <a class="reference internal" href="functions.html#print" title="print"><code class="xref py py-func docutils literal"><span class="pre">print()</span></code></a> function.</p>
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<dt id="tabnanny.verbose">
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<code class="descclassname">tabnanny.</code><code class="descname">verbose</code><a class="headerlink" href="#tabnanny.verbose" title="Permalink to this definition">¶</a></dt>
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<dd><p>Flag indicating whether to print verbose messages. This is incremented by the
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<code class="docutils literal"><span class="pre">-v</span></code> option if called as a script.</p>
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<dt id="tabnanny.filename_only">
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<code class="descclassname">tabnanny.</code><code class="descname">filename_only</code><a class="headerlink" href="#tabnanny.filename_only" title="Permalink to this definition">¶</a></dt>
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<dd><p>Flag indicating whether to print only the filenames of files containing
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whitespace related problems. This is set to true by the <code class="docutils literal"><span class="pre">-q</span></code> option if called
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<dl class="exception">
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<dt id="tabnanny.NannyNag">
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<em class="property">exception </em><code class="descclassname">tabnanny.</code><code class="descname">NannyNag</code><a class="headerlink" href="#tabnanny.NannyNag" title="Permalink to this definition">¶</a></dt>
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<dd><p>Raised by <a class="reference internal" href="#tabnanny.tokeneater" title="tabnanny.tokeneater"><code class="xref py py-func docutils literal"><span class="pre">tokeneater()</span></code></a> if detecting an ambiguous indent. Captured and
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handled in <a class="reference internal" href="#tabnanny.check" title="tabnanny.check"><code class="xref py py-func docutils literal"><span class="pre">check()</span></code></a>.</p>
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<dl class="function">
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<dt id="tabnanny.tokeneater">
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<code class="descclassname">tabnanny.</code><code class="descname">tokeneater</code><span class="sig-paren">(</span><em>type</em>, <em>token</em>, <em>start</em>, <em>end</em>, <em>line</em><span class="sig-paren">)</span><a class="headerlink" href="#tabnanny.tokeneater" title="Permalink to this definition">¶</a></dt>
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<dd><p>This function is used by <a class="reference internal" href="#tabnanny.check" title="tabnanny.check"><code class="xref py py-func docutils literal"><span class="pre">check()</span></code></a> as a callback parameter to the function
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<a class="reference internal" href="tokenize.html#tokenize.tokenize" title="tokenize.tokenize"><code class="xref py py-func docutils literal"><span class="pre">tokenize.tokenize()</span></code></a>.</p>
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<p class="first admonition-title">See also</p>
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<dl class="last docutils">
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<dt>Module <a class="reference internal" href="tokenize.html#module-tokenize" title="tokenize: Lexical scanner for Python source code."><code class="xref py py-mod docutils literal"><span class="pre">tokenize</span></code></a></dt>
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<dd>Lexical scanner for Python source code.</dd>
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