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  <div class="section" id="slice-objects">
<span id="id1"></span><h1>Slice Objects<a class="headerlink" href="#slice-objects" title="Permalink to this headline">¶</a></h1>
<dl class="var">
<dt id="PySlice_Type">
<a class="reference internal" href="type.html#PyTypeObject" title="PyTypeObject">PyTypeObject</a> <tt class="descname">PySlice_Type</tt><a class="headerlink" href="#PySlice_Type" title="Permalink to this definition">¶</a></dt>
<dd><p>The type object for slice objects.  This is the same as <a class="reference internal" href="../library/functions.html#slice" title="slice"><tt class="xref py py-class docutils literal"><span class="pre">slice</span></tt></a> in the
Python layer.</p>
</dd></dl>

<dl class="function">
<dt id="PySlice_Check">
int <tt class="descname">PySlice_Check</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*ob</em><big>)</big><a class="headerlink" href="#PySlice_Check" title="Permalink to this definition">¶</a></dt>
<dd><p>Return true if <em>ob</em> is a slice object; <em>ob</em> must not be <em>NULL</em>.</p>
</dd></dl>

<dl class="function">
<dt id="PySlice_New">
<a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a>* <tt class="descname">PySlice_New</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*start</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*stop</em>, <a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*step</em><big>)</big><a class="headerlink" href="#PySlice_New" title="Permalink to this definition">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>Return a new slice object with the given values.  The <em>start</em>, <em>stop</em>, and
<em>step</em> parameters are used as the values of the slice object attributes of
the same names.  Any of the values may be <em>NULL</em>, in which case the
<tt class="xref docutils literal"><span class="pre">None</span></tt> will be used for the corresponding attribute.  Return <em>NULL</em> if
the new object could not be allocated.</p>
</dd></dl>

<dl class="function">
<dt id="PySlice_GetIndices">
int <tt class="descname">PySlice_GetIndices</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*slice</em>, Py_ssize_t<em>&nbsp;length</em>, Py_ssize_t<em>&nbsp;*start</em>, Py_ssize_t<em>&nbsp;*stop</em>, Py_ssize_t<em>&nbsp;*step</em><big>)</big><a class="headerlink" href="#PySlice_GetIndices" title="Permalink to this definition">¶</a></dt>
<dd><p>Retrieve the start, stop and step indices from the slice object <em>slice</em>,
assuming a sequence of length <em>length</em>. Treats indices greater than
<em>length</em> as errors.</p>
<p>Returns 0 on success and -1 on error with no exception set (unless one of
the indices was not <a class="reference internal" href="../library/constants.html#None" title="None"><tt class="xref py py-const xref docutils literal"><span class="pre">None</span></tt></a> and failed to be converted to an integer,
in which case -1 is returned with an exception set).</p>
<p>You probably do not want to use this function.</p>
<p class="versionchanged">
<span class="versionmodified">Changed in version 3.2: </span>The parameter type for the <em>slice</em> parameter was <tt class="docutils literal"><span class="pre">PySliceObject*</span></tt>
before.</p>
</dd></dl>

<dl class="function">
<dt id="PySlice_GetIndicesEx">
int <tt class="descname">PySlice_GetIndicesEx</tt><big>(</big><a class="reference internal" href="structures.html#PyObject" title="PyObject">PyObject</a><em>&nbsp;*slice</em>, Py_ssize_t<em>&nbsp;length</em>, Py_ssize_t<em>&nbsp;*start</em>, Py_ssize_t<em>&nbsp;*stop</em>, Py_ssize_t<em>&nbsp;*step</em>, Py_ssize_t<em>&nbsp;*slicelength</em><big>)</big><a class="headerlink" href="#PySlice_GetIndicesEx" title="Permalink to this definition">¶</a></dt>
<dd><p>Usable replacement for <a class="reference internal" href="#PySlice_GetIndices" title="PySlice_GetIndices"><tt class="xref c c-func docutils literal"><span class="pre">PySlice_GetIndices()</span></tt></a>.  Retrieve the start,
stop, and step indices from the slice object <em>slice</em> assuming a sequence of
length <em>length</em>, and store the length of the slice in <em>slicelength</em>.  Out
of bounds indices are clipped in a manner consistent with the handling of
normal slices.</p>
<p>Returns 0 on success and -1 on error with exception set.</p>
<p class="versionchanged">
<span class="versionmodified">Changed in version 3.2: </span>The parameter type for the <em>slice</em> parameter was <tt class="docutils literal"><span class="pre">PySliceObject*</span></tt>
before.</p>
</dd></dl>

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