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        <a href="lxml-module.html">Package&nbsp;lxml</a> ::
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        Class&nbsp;PyErrorLog
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<h1 class="epydoc">Class PyErrorLog</h1><p class="nomargin-top"></p>
<pre class="base-tree">
   object --+    
            |    
<a href="lxml.etree._BaseErrorLog-class.html" onclick="show_private();">_BaseErrorLog</a> --+
                |
               <strong class="uidshort">PyErrorLog</strong>
</pre>

<hr />
<p>PyErrorLog(self, logger_name=None, logger=None)
A global error log that connects to the Python stdlib logging package.</p>
<p>The constructor accepts an optional logger name or a readily
instantiated logger instance.</p>
<p>If you want to change the mapping between libxml2's ErrorLevels and Python
logging levels, you can modify the level_map dictionary from a subclass.</p>
<p>The default mapping is:</p>
<pre class="rst-literal-block">
ErrorLevels.WARNING = logging.WARNING
ErrorLevels.ERROR   = logging.ERROR
ErrorLevels.FATAL   = logging.CRITICAL
</pre>
<p>You can also override the method <tt class="rst-docutils literal">receive()</tt> that takes a LogEntry
object and calls <tt class="rst-docutils literal">self.log(log_entry, format_string, arg1, arg2, <span class="pre">...)</span></tt>
with appropriate data.</p>

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          <td><span class="summary-sig"><a href="lxml.etree.PyErrorLog-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">logger_name</span>=<span class="summary-sig-default">None</span>,
        <span class="summary-sig-arg">logger</span>=<span class="summary-sig-default">None</span>)</span><br />
      x.__init__(...) initializes x; see help(type(x)) for signature</td>
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      <span class="summary-type">a new object with type S, a subtype of T</span>
    </td><td class="summary">
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        <tr>
          <td><span class="summary-sig"><a href="lxml.etree.PyErrorLog-class.html#__new__" class="summary-sig-name">__new__</a>(<span class="summary-sig-arg">T</span>,
        <span class="summary-sig-arg">S</span>,
        <span class="summary-sig-arg">...</span>)</span></td>
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          <td><span class="summary-sig"><a href="lxml.etree.PyErrorLog-class.html#copy" class="summary-sig-name">copy</a>(<span class="summary-sig-arg">...</span>)</span><br />
      Dummy method that returns an empty error log.</td>
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          <td><span class="summary-sig"><a href="lxml.etree.PyErrorLog-class.html#log" class="summary-sig-name">log</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">log_entry</span>,
        <span class="summary-sig-arg">message</span>,
        <span class="summary-sig-arg">*args</span>)</span><br />
      Called by the .receive() method to log a _LogEntry instance to
the Python logging system.  This handles the error level
mapping.</td>
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          <td><span class="summary-sig"><a href="lxml.etree.PyErrorLog-class.html#receive" class="summary-sig-name">receive</a>(<span class="summary-sig-arg">self</span>,
        <span class="summary-sig-arg">log_entry</span>)</span><br />
      Receive a _LogEntry instance from the logging system.  Calls
the .log() method with appropriate parameters:</td>
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    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._BaseErrorLog-class.html" onclick="show_private();">_BaseErrorLog</a></code></b>:
      <code><a href="lxml.etree._BaseErrorLog-class.html#__repr__">__repr__</a></code>
      </p>
    <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
      <code>__delattr__</code>,
      <code>__format__</code>,
      <code>__getattribute__</code>,
      <code>__hash__</code>,
      <code>__reduce__</code>,
      <code>__reduce_ex__</code>,
      <code>__setattr__</code>,
      <code>__sizeof__</code>,
      <code>__str__</code>,
      <code>__subclasshook__</code>
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    <p class="indent-wrapped-lines"><b>Inherited from <code><a href="lxml.etree._BaseErrorLog-class.html" onclick="show_private();">_BaseErrorLog</a></code></b>:
      <code><a href="lxml.etree._BaseErrorLog-class.html#last_error">last_error</a></code>
      </p>
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<a name="__init__"></a>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">logger_name</span>=<span class="sig-default">None</span>,
        <span class="sig-arg">logger</span>=<span class="sig-default">None</span>)</span>
    <br /><em class="fname">(Constructor)</em>
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  x.__init__(...) initializes x; see help(type(x)) for signature
  <dl class="fields">
    <dt>Overrides:
        object.__init__
    </dt>
  </dl>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">__new__</span>(<span class="sig-arg">T</span>,
        <span class="sig-arg">S</span>,
        <span class="sig-arg">...</span>)</span>
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  <dl class="fields">
    <dt>Returns: a new object with type S, a subtype of T</dt>
    <dt>Overrides:
        object.__new__
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">copy</span>(<span class="sig-arg">...</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
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  Dummy method that returns an empty error log.
  <dl class="fields">
    <dt>Overrides:
        <a href="lxml.etree._BaseErrorLog-class.html#copy">_BaseErrorLog.copy</a>
    </dt>
  </dl>
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<a name="log"></a>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">log</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">log_entry</span>,
        <span class="sig-arg">message</span>,
        <span class="sig-arg">*args</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
  </tr></table>
  
  <p>Called by the .receive() method to log a _LogEntry instance to
the Python logging system.  This handles the error level
mapping.</p>
<p>In the default implementation, the <tt class="rst-docutils literal">message</tt> argument
receives a complete log line, and there are no further
<tt class="rst-docutils literal">args</tt>.  To change the message format, it is best to
override the .receive() method instead of this one.</p>
  <dl class="fields">
  </dl>
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  <h3 class="epydoc"><span class="sig"><span class="sig-name">receive</span>(<span class="sig-arg">self</span>,
        <span class="sig-arg">log_entry</span>)</span>
  </h3>
  </td><td align="right" valign="top"
    >&nbsp;
    </td>
  </tr></table>
  
  <p>Receive a _LogEntry instance from the logging system.  Calls
the .log() method with appropriate parameters:</p>
<pre class="rst-literal-block">
self.log(log_entry, repr(log_entry))
</pre>
<p>You can override this method to provide your own log output
format.</p>
  <dl class="fields">
    <dt>Overrides:
        <a href="lxml.etree._BaseErrorLog-class.html#receive">_BaseErrorLog.receive</a>
    </dt>
  </dl>
</td></tr></table>
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