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– Container data types<a class="headerlink" href="#module-collections" title="Permalink to this headline">¶</a></h1> <table class="docutils field-list" frame="void" rules="none"> <col class="field-name" /> <col class="field-body" /> <tbody valign="top"> <tr class="field"><th class="field-name">Purpose:</th><td class="field-body">Container data types.</td> </tr> <tr class="field"><th class="field-name">Python Version:</th><td class="field-body">2.4 and later</td> </tr> </tbody> </table> <p>The <a class="reference internal" href="#module-collections" title="collections: Container data types."><tt class="xref py py-mod docutils literal"><span class="pre">collections</span></tt></a> module includes container data types beyond the built-in types <tt class="xref py py-class docutils literal"><span class="pre">list</span></tt>, <tt class="xref py py-class docutils literal"><span class="pre">dict</span></tt>, and <tt class="xref py py-class docutils literal"><span class="pre">tuple</span></tt>.</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="counter.html">Counter</a><ul> <li class="toctree-l2"><a class="reference internal" href="counter.html#initializing">Initializing</a></li> <li class="toctree-l2"><a class="reference internal" href="counter.html#accessing-counts">Accessing Counts</a></li> <li class="toctree-l2"><a class="reference internal" href="counter.html#arithmetic">Arithmetic</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="defaultdict.html">defaultdict</a></li> <li class="toctree-l1"><a class="reference internal" href="deque.html">Deque</a><ul> <li class="toctree-l2"><a class="reference internal" href="deque.html#populating">Populating</a></li> <li class="toctree-l2"><a class="reference internal" href="deque.html#consuming">Consuming</a></li> <li class="toctree-l2"><a class="reference internal" href="deque.html#rotating">Rotating</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="namedtuple.html">namedtuple</a><ul> <li class="toctree-l2"><a class="reference internal" href="namedtuple.html#defining">Defining</a></li> <li class="toctree-l2"><a class="reference internal" href="namedtuple.html#invalid-field-names">Invalid Field Names</a></li> </ul> </li> <li class="toctree-l1"><a class="reference internal" href="ordereddict.html">OrderedDict</a><ul> <li class="toctree-l2"><a class="reference internal" href="ordereddict.html#equality">Equality</a></li> </ul> </li> </ul> </div> <div class="admonition-see-also admonition seealso"> <p class="first admonition-title">See also</p> <dl class="last docutils"> <dt><a class="reference external" href="http://docs.python.org/library/collections.html">collections</a></dt> <dd>The standard library documentation for this module.</dd> </dl> </div> </div> </div> </div> </div> <div class="clearer"></div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li 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