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        Class&nbsp;IS_MATCH
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class IS_MATCH</h1><span class="codelink"><a href="web2py.gluon.validators-pysrc.html#IS_MATCH">source&nbsp;code</a></span><br /><br />
<pre class="base-tree">
object --+    
         |    
 <a href="web2py.gluon.validators.Validator-class.html">Validator</a> --+
             |
            <strong class="uidshort">IS_MATCH</strong>
</pre>

<dl><dt>Known Subclasses:</dt>
<dd>
    <a href="web2py.gluon.validators.IS_ALPHANUMERIC-class.html">IS_ALPHANUMERIC</a>
</dd></dl>

<hr />
example:
<pre class="literalblock">
   INPUT(_type='text', _name='name', requires=IS_MATCH('.+'))
</pre>
  the argument of IS_MATCH is a regular expression:
<pre class="literalblock">
   &gt;&gt;&gt; IS_MATCH('.+')('hello')
   ('hello', None)

   &gt;&gt;&gt; IS_MATCH('.+')('')
   ('', 'invalid expression')
</pre><br /><br />

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