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<H3><A NAME="SECTION009252000000000000000">
7.2.5.2 Complex Numbers as Python Objects</A>
</H3>

<P>
<dl><dt><b><tt class="ctype"><a id='l2h-438' xml:id='l2h-438'>PyComplexObject</a></tt></b></dt>
<dd>
  This subtype of <tt class="ctype">PyObject</tt> represents a Python complex number
  object.
</dl>

<P>
<dl><dt>PyTypeObject <b><tt id='l2h-439' xml:id='l2h-439' class="cdata">PyComplex_Type</tt></b></dt>
<dd>
  This instance of <tt class="ctype">PyTypeObject</tt> represents the Python complex
  number type.
</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>int&nbsp;<b><tt id='l2h-440' xml:id='l2h-440' class="cfunction">PyComplex_Check</tt></b>(</nobr></td><td>PyObject *<var>p</var>)</td></tr></table></dt>
<dd>
  Return true if its argument is a <tt class="ctype">PyComplexObject</tt> or a
  subtype of <tt class="ctype">PyComplexObject</tt>.

<span class="versionnote">Changed in version 2.2:
Allowed subtypes to be accepted.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>int&nbsp;<b><tt id='l2h-441' xml:id='l2h-441' class="cfunction">PyComplex_CheckExact</tt></b>(</nobr></td><td>PyObject *<var>p</var>)</td></tr></table></dt>
<dd>
  Return true if its argument is a <tt class="ctype">PyComplexObject</tt>, but not a
  subtype of <tt class="ctype">PyComplexObject</tt>.

<span class="versionnote">New in version 2.2.</span>

</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-442' xml:id='l2h-442' class="cfunction">PyComplex_FromCComplex</tt></b>(</nobr></td><td>Py_complex <var>v</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>
  Create a new Python complex number object from a C
  <tt class="ctype">Py_complex</tt> value.
</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>PyObject*&nbsp;<b><tt id='l2h-443' xml:id='l2h-443' class="cfunction">PyComplex_FromDoubles</tt></b>(</nobr></td><td>double <var>real</var>, double <var>imag</var>)</td></tr></table></dt>
<dd>
<div class="refcount-info">
  <span class="label">Return value:</span>
  <span class="value">New reference.</span>
</div>
  Return a new <tt class="ctype">PyComplexObject</tt> object from <var>real</var> and
  <var>imag</var>.
</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>double&nbsp;<b><tt id='l2h-444' xml:id='l2h-444' class="cfunction">PyComplex_RealAsDouble</tt></b>(</nobr></td><td>PyObject *<var>op</var>)</td></tr></table></dt>
<dd>
  Return the real part of <var>op</var> as a C <tt class="ctype">double</tt>.
</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>double&nbsp;<b><tt id='l2h-445' xml:id='l2h-445' class="cfunction">PyComplex_ImagAsDouble</tt></b>(</nobr></td><td>PyObject *<var>op</var>)</td></tr></table></dt>
<dd>
  Return the imaginary part of <var>op</var> as a C <tt class="ctype">double</tt>.
</dd></dl>

<P>
<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline"><td><nobr>Py_complex&nbsp;<b><tt id='l2h-446' xml:id='l2h-446' class="cfunction">PyComplex_AsCComplex</tt></b>(</nobr></td><td>PyObject *<var>op</var>)</td></tr></table></dt>
<dd>
  Return the <tt class="ctype">Py_complex</tt> value of the complex number
  <var>op</var>.
</dd></dl>

<P>

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<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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