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<li><a href="../cosmology/index.html" accesskey="U">Cosmological Calculations (<tt class="docutils literal"><span class="pre">astropy.cosmology</span></tt>)</a> »</li>
<li>set_current</li>
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<div class="section" id="set-current">
<h1>set_current<a class="headerlink" href="#set-current" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="astropy.cosmology.core.set_current">
<tt class="descclassname">astropy.cosmology.core.</tt><tt class="descname">set_current</tt><big>(</big><em>cosmo</em><big>)</big><a class="reference external" href="http://github.com/astropy/astropy/tree/v0.2.4/astropy/cosmology/core.py#L2013" title="Push the Edit button on the next page"><span class="edit-on-github viewcode-link"> [edit on github]</span></a><a class="reference internal" href="../_modules/astropy/cosmology/core.html#set_current"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#astropy.cosmology.core.set_current" title="Permalink to this definition">¶</a></dt>
<dd><p>Set the current cosmology.</p>
<p>Call this with an empty string (‘’) to get a list of the strings
that map to available pre-defined cosmologies.</p>
<div class="admonition warning">
<p class="first admonition-title">Warning</p>
<p class="last"><a class="reference internal" href="#astropy.cosmology.core.set_current" title="astropy.cosmology.core.set_current"><tt class="xref py py-obj docutils literal"><span class="pre">set_current</span></tt></a> is the only way to change the current cosmology at
runtime! The current cosmology can also be read from an option
in the astropy configuration file when astropy.cosmology is first
imported. However, any subsequent changes to the cosmology
configuration option using <a class="reference internal" href="astropy.config.configuration.ConfigurationItem.html#astropy.config.configuration.ConfigurationItem.set" title="astropy.config.configuration.ConfigurationItem.set"><tt class="xref py py-obj docutils literal"><span class="pre">ConfigurationItem.set</span></tt></a> at run-time
will not update the current cosmology.</p>
</div>
<table class="docutils field-list" frame="void" rules="none">
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<tr class="field-odd field"><th class="field-name">Parameters :</th><td class="field-body"><p class="first"><strong>cosmo</strong> : str or <tt class="xref py py-obj docutils literal"><span class="pre">Cosmology</span></tt> instance</p>
<blockquote class="last">
<div><p>The cosmology to use.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
<div class="admonition-see-also admonition seealso">
<p class="first admonition-title">See also</p>
<dl class="last docutils">
<dt><a class="reference internal" href="astropy.cosmology.core.get_current.html#astropy.cosmology.core.get_current" title="astropy.cosmology.core.get_current"><tt class="xref py py-obj docutils literal"><span class="pre">get_current</span></tt></a></dt>
<dd>returns the currently-set cosmology</dd>
</dl>
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