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<h1>Source code for pylorax.decorators</h1><div class="highlight"><pre>
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<span></span><span class="c1">#</span>
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<span class="c1"># decorators.py</span>
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<span class="c1">#</span>
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<span class="c1"># Copyright (C) 2009-2015 Red Hat, Inc.</span>
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<span class="c1">#</span>
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<span class="c1"># This program is free software; you can redistribute it and/or modify</span>
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<span class="c1"># it under the terms of the GNU General Public License as published by</span>
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<span class="c1"># the Free Software Foundation; either version 2 of the License, or</span>
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<span class="c1"># (at your option) any later version.</span>
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<span class="c1">#</span>
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<span class="c1"># This program is distributed in the hope that it will be useful,</span>
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<span class="c1"># but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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<span class="c1"># MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
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<span class="c1"># GNU General Public License for more details.</span>
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<span class="c1">#</span>
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<span class="c1"># You should have received a copy of the GNU General Public License</span>
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<span class="c1"># along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
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<span class="c1">#</span>
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<span class="c1"># Red Hat Author(s): Martin Gracik <mgracik@redhat.com></span>
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<span class="c1">#</span>
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<div class="viewcode-block" id="singleton"><a class="viewcode-back" href="../../pylorax.html#pylorax.decorators.singleton">[docs]</a><span class="k">def</span> <span class="nf">singleton</span><span class="p">(</span><span class="bp">cls</span><span class="p">):</span>
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<span class="n">instances</span> <span class="o">=</span> <span class="p">{}</span>
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<span class="k">def</span> <span class="nf">get_instance</span><span class="p">():</span>
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<span class="k">if</span> <span class="bp">cls</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">instances</span><span class="p">:</span>
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<span class="n">instances</span><span class="p">[</span><span class="bp">cls</span><span class="p">]</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">()</span>
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<span class="k">return</span> <span class="n">instances</span><span class="p">[</span><span class="bp">cls</span><span class="p">]</span>
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<span class="k">return</span> <span class="n">get_instance</span></div>
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</pre></div>
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