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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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<title>布林物件 — Python 3.7.0 說明文件</title>
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<div class="section" id="boolean-objects">
<span id="boolobjects"></span><h1>布林物件<a class="headerlink" href="#boolean-objects" title="本標題的永久連結">¶</a></h1>
<p>Booleans in Python are implemented as a subclass of integers. There are only
two booleans, <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_False</span></code> and <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_True</span></code>. As such, the normal
creation and deletion functions don’t apply to booleans. The following macros
are available, however.</p>
<dl class="function">
<dt id="c.PyBool_Check">
int <code class="descname">PyBool_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em> *o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyBool_Check" title="本定義的永久連結">¶</a></dt>
<dd><p>Return true if <em>o</em> is of type <code class="xref c c-data docutils literal notranslate"><span class="pre">PyBool_Type</span></code>.</p>
</dd></dl>
<dl class="var">
<dt id="c.Py_False">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">Py_False</code><a class="headerlink" href="#c.Py_False" title="本定義的永久連結">¶</a></dt>
<dd><p>The Python <code class="docutils literal notranslate"><span class="pre">False</span></code> object. This object has no methods. It needs to be
treated just like any other object with respect to reference counts.</p>
</dd></dl>
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">Py_True</code><a class="headerlink" href="#c.Py_True" title="本定義的永久連結">¶</a></dt>
<dd><p>The Python <code class="docutils literal notranslate"><span class="pre">True</span></code> object. This object has no methods. It needs to be treated
just like any other object with respect to reference counts.</p>
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<dt id="c.Py_RETURN_FALSE">
<code class="descname">Py_RETURN_FALSE</code><a class="headerlink" href="#c.Py_RETURN_FALSE" title="本定義的永久連結">¶</a></dt>
<dd><p>Return <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_False</span></code> from a function, properly incrementing its reference
count.</p>
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<dt id="c.Py_RETURN_TRUE">
<code class="descname">Py_RETURN_TRUE</code><a class="headerlink" href="#c.Py_RETURN_TRUE" title="本定義的永久連結">¶</a></dt>
<dd><p>Return <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_True</span></code> from a function, properly incrementing its reference
count.</p>
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<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyBool_FromLong</code><span class="sig-paren">(</span>long<em> v</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyBool_FromLong" title="本定義的永久連結">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>Return a new reference to <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_True</span></code> or <code class="xref py py-const docutils literal notranslate"><span class="pre">Py_False</span></code> depending on the
truth value of <em>v</em>.</p>
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