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        Package&nbsp;web2py ::
        <a href="web2py.gluon-module.html">Package&nbsp;gluon</a> ::
        Module&nbsp;portalocker
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<!-- ==================== MODULE DESCRIPTION ==================== -->
<h1 class="epydoc">Module portalocker</h1><span class="codelink"><a href="web2py.gluon.portalocker-pysrc.html">source&nbsp;code</a></span><br /><br />
<pre class="literalblock">

Cross-platform (posix/nt) API for flock-style file locking.

Synopsis:

   import portalocker
   file = open(&quot;somefile&quot;, &quot;r+&quot;)
   portalocker.lock(file, portalocker.LOCK_EX)
   file.seek(12)
   file.write(&quot;foo&quot;)
   file.close()

If you know what you're doing, you may choose to

   portalocker.unlock(file)

before closing the file, but why?

Methods:

   lock( file, flags )
   unlock( file )

Constants:

   LOCK_EX
   LOCK_SH
   LOCK_NB

I learned the win32 technique for locking files from sample code
provided by John Nielsen &lt;nielsenjf@my-deja.com&gt; in the documentation
that accompanies the win32 modules.

Author: Jonathan Feinberg &lt;jdf@pobox.com&gt;
Version: $Id: portalocker.py,v 1.3 2001/05/29 18:47:55 Administrator Exp $

</pre><br /><br />

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          <td><span class="summary-sig"><a name="lock"></a><span class="summary-sig-name">lock</span>(<span class="summary-sig-arg">file</span>,
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        <a name="os_locking"></a><span class="summary-name">os_locking</span> = <code title="'posix'"><code class="variable-quote">'</code><code class="variable-string">posix</code><code class="variable-quote">'</code></code>
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        <a name="__overlapped"></a><span class="summary-name">__overlapped</span> = <code title="pywintypes.OVERLAPPED()">pywintypes.OVERLAPPED()</code>
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        <a name="LOCK_EX"></a><span class="summary-name">LOCK_EX</span> = <code title="1">1</code><br />
      PyMySQL: A pure-Python drop-in replacement for MySQLdb.
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      PyMySQL: A pure-Python drop-in replacement for MySQLdb.
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      PyMySQL: A pure-Python drop-in replacement for MySQLdb.
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