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<h1>35.14. <tt class="xref docutils literal"><span class="pre">nis</span></tt> — Interface to Sun’s NIS (Yellow Pages)<a class="headerlink" href="#module-nis" title="Permalink to this headline">¶</a></h1>
<p><em>Platforms: </em>Unix</p>
<p>The <tt class="xref docutils literal"><span class="pre">nis</span></tt> module gives a thin wrapper around the NIS library, useful for
central administration of several hosts.</p>
<p>Because NIS exists only on Unix systems, this module is only available for Unix.</p>
<p>The <tt class="xref docutils literal"><span class="pre">nis</span></tt> module defines the following functions:</p>
<dl class="function">
<dt id="nis.match">
<tt class="descclassname">nis.</tt><tt class="descname">match</tt><big>(</big><em>key</em>, <em>mapname</em><span class="optional">[</span>, <em>domain=default_domain</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#nis.match" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the match for <em>key</em> in map <em>mapname</em>, or raise an error
(<a title="nis.error" class="reference internal" href="#nis.error"><tt class="xref docutils literal"><span class="pre">nis.error</span></tt></a>) if there is none. Both should be strings, <em>key</em> is 8-bit
clean. Return value is an arbitrary array of bytes (may contain <tt class="docutils literal"><span class="pre">NULL</span></tt> and
other joys).</p>
<p>Note that <em>mapname</em> is first checked if it is an alias to another name.</p>
<p class="versionchanged">
<span class="versionmodified">Changed in version 2.5: </span>The <em>domain</em> argument allows to override the NIS domain used for the lookup. If
unspecified, lookup is in the default NIS domain.</p>
</dd></dl>
<dl class="function">
<dt id="nis.cat">
<tt class="descclassname">nis.</tt><tt class="descname">cat</tt><big>(</big><em>mapname</em><span class="optional">[</span>, <em>domain=default_domain</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#nis.cat" title="Permalink to this definition">¶</a></dt>
<dd><p>Return a dictionary mapping <em>key</em> to <em>value</em> such that <tt class="docutils literal"><span class="pre">match(key,</span>
<span class="pre">mapname)==value</span></tt>. Note that both keys and values of the dictionary are
arbitrary arrays of bytes.</p>
<p>Note that <em>mapname</em> is first checked if it is an alias to another name.</p>
<p class="versionchanged">
<span class="versionmodified">Changed in version 2.5: </span>The <em>domain</em> argument allows to override the NIS domain used for the lookup. If
unspecified, lookup is in the default NIS domain.</p>
</dd></dl>
<dl class="function">
<dt id="nis.maps">
<tt class="descclassname">nis.</tt><tt class="descname">maps</tt><big>(</big><span class="optional">[</span><em>domain=default_domain</em><span class="optional">]</span><big>)</big><a class="headerlink" href="#nis.maps" title="Permalink to this definition">¶</a></dt>
<dd><p>Return a list of all valid maps.</p>
<p class="versionchanged">
<span class="versionmodified">Changed in version 2.5: </span>The <em>domain</em> argument allows to override the NIS domain used for the lookup. If
unspecified, lookup is in the default NIS domain.</p>
</dd></dl>
<dl class="function">
<dt id="nis.get_default_domain">
<tt class="descclassname">nis.</tt><tt class="descname">get_default_domain</tt><big>(</big><big>)</big><a class="headerlink" href="#nis.get_default_domain" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the system default NIS domain.</p>
<p class="versionadded">
<span class="versionmodified">New in version 2.5.</span></p>
</dd></dl>
<p>The <tt class="xref docutils literal"><span class="pre">nis</span></tt> module defines the following exception:</p>
<dl class="exception">
<dt id="nis.error">
<em class="property">exception </em><tt class="descclassname">nis.</tt><tt class="descname">error</tt><a class="headerlink" href="#nis.error" title="Permalink to this definition">¶</a></dt>
<dd>An error raised when a NIS function returns an error code.</dd></dl>
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