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<H1><A NAME="SECTION006100000000000000000"></A><A NAME="standardExceptions"></A>
<BR>
4.1 Standard Exceptions
</H1>

<P>
All standard Python exceptions are available as global variables whose
names are "<tt class="samp">PyExc_</tt>" followed by the Python exception name.  These
have the type <tt class="ctype">PyObject*</tt>; they are all class objects.  For
completeness, here are all the variables:

<P>
<div class="center"><table class="realtable">
  <thead>
    <tr>
      <th class="left"  >C Name</th>
      <th class="left"  >Python Name</th>
      <th class="center">Notes</th>
      </tr>
    </thead>
  <tbody>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_Exception<a id='l2h-126' xml:id='l2h-126'></a></tt></td>
        <td class="left"  ><tt class="exception">Exception</tt></td>
        <td class="center">(1)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_StandardError<a id='l2h-127' xml:id='l2h-127'></a></tt></td>
        <td class="left"  ><tt class="exception">StandardError</tt></td>
        <td class="center">(1)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_ArithmeticError<a id='l2h-128' xml:id='l2h-128'></a></tt></td>
        <td class="left"  ><tt class="exception">ArithmeticError</tt></td>
        <td class="center">(1)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_LookupError<a id='l2h-129' xml:id='l2h-129'></a></tt></td>
        <td class="left"  ><tt class="exception">LookupError</tt></td>
        <td class="center">(1)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_AssertionError<a id='l2h-130' xml:id='l2h-130'></a></tt></td>
        <td class="left"  ><tt class="exception">AssertionError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_AttributeError<a id='l2h-131' xml:id='l2h-131'></a></tt></td>
        <td class="left"  ><tt class="exception">AttributeError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_EOFError<a id='l2h-132' xml:id='l2h-132'></a></tt></td>
        <td class="left"  ><tt class="exception">EOFError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_EnvironmentError<a id='l2h-133' xml:id='l2h-133'></a></tt></td>
        <td class="left"  ><tt class="exception">EnvironmentError</tt></td>
        <td class="center">(1)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_FloatingPointError<a id='l2h-134' xml:id='l2h-134'></a></tt></td>
        <td class="left"  ><tt class="exception">FloatingPointError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_IOError<a id='l2h-135' xml:id='l2h-135'></a></tt></td>
        <td class="left"  ><tt class="exception">IOError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_ImportError<a id='l2h-136' xml:id='l2h-136'></a></tt></td>
        <td class="left"  ><tt class="exception">ImportError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_IndexError<a id='l2h-137' xml:id='l2h-137'></a></tt></td>
        <td class="left"  ><tt class="exception">IndexError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_KeyError<a id='l2h-138' xml:id='l2h-138'></a></tt></td>
        <td class="left"  ><tt class="exception">KeyError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_KeyboardInterrupt<a id='l2h-139' xml:id='l2h-139'></a></tt></td>
        <td class="left"  ><tt class="exception">KeyboardInterrupt</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_MemoryError<a id='l2h-140' xml:id='l2h-140'></a></tt></td>
        <td class="left"  ><tt class="exception">MemoryError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_NameError<a id='l2h-141' xml:id='l2h-141'></a></tt></td>
        <td class="left"  ><tt class="exception">NameError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_NotImplementedError<a id='l2h-142' xml:id='l2h-142'></a></tt></td>
        <td class="left"  ><tt class="exception">NotImplementedError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_OSError<a id='l2h-143' xml:id='l2h-143'></a></tt></td>
        <td class="left"  ><tt class="exception">OSError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_OverflowError<a id='l2h-144' xml:id='l2h-144'></a></tt></td>
        <td class="left"  ><tt class="exception">OverflowError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_ReferenceError<a id='l2h-145' xml:id='l2h-145'></a></tt></td>
        <td class="left"  ><tt class="exception">ReferenceError</tt></td>
        <td class="center">(2)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_RuntimeError<a id='l2h-146' xml:id='l2h-146'></a></tt></td>
        <td class="left"  ><tt class="exception">RuntimeError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_SyntaxError<a id='l2h-147' xml:id='l2h-147'></a></tt></td>
        <td class="left"  ><tt class="exception">SyntaxError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_SystemError<a id='l2h-148' xml:id='l2h-148'></a></tt></td>
        <td class="left"  ><tt class="exception">SystemError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_SystemExit<a id='l2h-149' xml:id='l2h-149'></a></tt></td>
        <td class="left"  ><tt class="exception">SystemExit</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_TypeError<a id='l2h-150' xml:id='l2h-150'></a></tt></td>
        <td class="left"  ><tt class="exception">TypeError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_ValueError<a id='l2h-151' xml:id='l2h-151'></a></tt></td>
        <td class="left"  ><tt class="exception">ValueError</tt></td>
        <td class="center"></td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_WindowsError<a id='l2h-152' xml:id='l2h-152'></a></tt></td>
        <td class="left"  ><tt class="exception">WindowsError</tt></td>
        <td class="center">(3)</td></tr>
    <tr><td class="left"   valign="baseline"><tt class="cdata">PyExc_ZeroDivisionError<a id='l2h-153' xml:id='l2h-153'></a></tt></td>
        <td class="left"  ><tt class="exception">ZeroDivisionError</tt></td>
        <td class="center"></td></tr></tbody>
</table></div>

<P>
Notes:
<DL>
<DT><STRONG>(1)</STRONG></DT>
<DD>This is a base class for other standard exceptions.

<P>
</DD>
<DT><STRONG>(2)</STRONG></DT>
<DD>This is the same as <tt class="exception">weakref.ReferenceError</tt>.

<P>
</DD>
<DT><STRONG>(3)</STRONG></DT>
<DD>Only defined on Windows; protect code that uses this by testing that
  the preprocessor macro <code>MS_WINDOWS</code> is defined.
</DD>
</DL>

<P>

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