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<H1><A NAME="SECTION0019600000000000000000">
17.6 <tt class="module">tabnanny</tt> --
Detection of ambiguous indentation</A>
</H1>
<P>
<P>
For the time being this module is intended to be called as a script.
However it is possible to import it into an IDE and use the function
<tt class="function">check()</tt> described below.
<P>
<b>Warning:</b> The API provided by this module is likely to change
in future releases; such changes may not be backward compatible.
<P>
<dl><dt><b><a name='l2h-3045'><tt class='function'>check</tt></a></b> (<var>file_or_dir</var>)
<dd>
If <var>file_or_dir</var> is a directory and not a symbolic link, then
recursively descend the directory tree named by <var>file_or_dir</var>,
checking all <span class="file">.py</span> files along the way. If <var>file_or_dir</var>
is an ordinary Python source file, it is checked for whitespace
related problems. The diagnostic messages are written to standard
output using the print statement.
</dl>
<P>
<dl><dt><b><a name='l2h-3046'><tt>verbose</tt></a></b>
<dd>
Flag indicating whether to print verbose messages.
This is set to true by the <code>-v</code> option if called as a script.
</dl>
<P>
<dl><dt><b><a name='l2h-3047'><tt>filename_only</tt></a></b>
<dd>
Flag indicating whether to print only the filenames of files
containing whitespace related problems. This is set to true by the
<code>-q</code> option if called as a script.
</dl>
<P>
<dl><dt><b><a name='l2h-3048'><tt class='exception'>NannyNag</tt></a></b>
<dd>
Raised by <tt class="function">tokeneater()</tt> if detecting an ambiguous indent.
Captured and handled in <tt class="function">check()</tt>.
</dl>
<P>
<dl><dt><b><a name='l2h-3049'><tt class='function'>tokeneater</tt></a></b> (<var>type, token, start, end, line</var>)
<dd>
This function is used by <tt class="function">check()</tt> as a callback parameter to
the function <tt class="function">tokenize.tokenize()</tt>.
</dl>
<P>
<div class='seealso'>
<p class='heading'><b>See Also:</b></p>
<dl compact class="seemodule">
<dt>Module <b><tt class='module'><a href="module-tokenize.html" tppabs="http://www.python.org/doc/current/lib/module-tokenize.html">tokenize</a></tt>:</b>
<dd>Lexical scanner for Python source code.
</dl>
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