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<div class="section" id="module-elib.intl">
<span id="internationalization"></span><h1>Internationalization<a class="headerlink" href="#module-elib.intl" title="Permalink to this headline">¶</a></h1>
<p>The elib.intl module provides enhanced internationalization (I18N) services for
your Python modules and applications.</p>
<p>elib.intl wraps Python’s <code class="xref py py-func docutils literal"><span class="pre">gettext()</span></code> functionality and adds the following on
Microsoft Windows systems:</p>
<blockquote>
<div><ul class="simple">
<li>automatic detection of the current screen language (not necessarily the same
as the installation language) provided by MUI packs,</li>
<li>makes sure internationalized C libraries which internally invoke gettext() or
dcgettext() can properly locate their message catalogs. This fixes a known
limitation in gettext’s Windows support when using eg. gtk.builder or gtk.glade.</li>
</ul>
</div></blockquote>
<p>See <a class="reference external" href="http://www.gnu.org/software/gettext/FAQ.html#windows_setenv">http://www.gnu.org/software/gettext/FAQ.html#windows_setenv</a> for more
information.</p>
<p>The elib.intl module defines the following functions:</p>
<dl class="function">
<dt id="elib.intl.install">
<code class="descclassname">elib.intl.</code><code class="descname">install</code><span class="sig-paren">(</span><em>domain</em>, <em>localedir</em><span class="sig-paren">)</span><a class="headerlink" href="#elib.intl.install" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>domain</strong> – translation domain</li>
<li><strong>localedir</strong> – locale directory</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>Installs the function _() in Python’s builtin namespace, based on
domain and localedir. Codeset is always UTF-8.</p>
<p>As seen below, you usually mark the strings in your application that are
candidates for translation, by wrapping them in a call to the _() function,
like this:</p>
<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">elib.intl</span>
<span class="n">elib</span><span class="o">.</span><span class="n">intl</span><span class="o">.</span><span class="n">install</span><span class="p">(</span><span class="s1">'myapplication'</span><span class="p">,</span> <span class="s1">'/path/to/usr/share/locale'</span><span class="p">)</span>
<span class="k">print</span> <span class="n">_</span><span class="p">(</span><span class="s1">'This string will be translated.'</span><span class="p">)</span>
</pre></div>
</div>
<p>Note that this is only one way, albeit the most convenient way,
to make the _() function available to your application. Because it affects
the entire application globally, and specifically Python’s built-in
namespace, localized modules should never install _(). Instead, you should
use <a class="reference internal" href="#elib.intl.install_module" title="elib.intl.install_module"><code class="xref py py-func docutils literal"><span class="pre">elib.intl.install_module()</span></code></a> to make _() available to your module.</p>
</dd></dl>
<dl class="function">
<dt id="elib.intl.install_module">
<code class="descclassname">elib.intl.</code><code class="descname">install_module</code><span class="sig-paren">(</span><em>domain</em>, <em>localedir</em><span class="sig-paren">)</span><a class="headerlink" href="#elib.intl.install_module" title="Permalink to this definition">¶</a></dt>
<dd><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first simple">
<li><strong>domain</strong> – translation domain</li>
<li><strong>localedir</strong> – locale directory</li>
</ul>
</td>
</tr>
<tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><p class="first last">an anonymous function object, based on domain and localedir.
Codeset is always UTF-8.</p>
</td>
</tr>
</tbody>
</table>
<p>You may find this function usefull when writing localized modules.
Use this code to make _() available to your module:</p>
<div class="highlight-python"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">elib.intl</span>
<span class="n">_</span> <span class="o">=</span> <span class="n">elib</span><span class="o">.</span><span class="n">intl</span><span class="o">.</span><span class="n">install_module</span><span class="p">(</span><span class="s1">'mymodule'</span><span class="p">,</span> <span class="s1">'/path/to/usr/share/locale'</span><span class="p">)</span>
<span class="k">print</span> <span class="n">_</span><span class="p">(</span><span class="s1">'This string will be translated.'</span><span class="p">)</span>
</pre></div>
</div>
<p>When writing a package, you can usually do this in the package’s __init__.py
file and import the _() function from the package namespace as needed.</p>
</dd></dl>
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