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<div class="section" id="api-reference">
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<h1>API Reference<a class="headerlink" href="#api-reference" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="running-a-backtest">
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<h2>Running a Backtest<a class="headerlink" href="#running-a-backtest" title="Permalink to this headline">¶</a></h2>
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</div>
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<div class="section" id="algorithm-api">
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<h2>Algorithm API<a class="headerlink" href="#algorithm-api" title="Permalink to this headline">¶</a></h2>
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<p>The following methods are available for use in the <code class="docutils literal"><span class="pre">initialize</span></code>,
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<code class="docutils literal"><span class="pre">handle_data</span></code>, and <code class="docutils literal"><span class="pre">before_trading_start</span></code> API functions.</p>
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<p>In all listed functions, the <code class="docutils literal"><span class="pre">self</span></code> argument is implicitly the
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currently-executing <code class="xref py py-class docutils literal"><span class="pre">TradingAlgorithm</span></code> instance.</p>
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<div class="section" id="data-object">
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<h3>Data Object<a class="headerlink" href="#data-object" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="scheduling-functions">
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<h3>Scheduling Functions<a class="headerlink" href="#scheduling-functions" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="orders">
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<h3>Orders<a class="headerlink" href="#orders" title="Permalink to this headline">¶</a></h3>
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<div class="section" id="order-cancellation-policies">
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<h4>Order Cancellation Policies<a class="headerlink" href="#order-cancellation-policies" title="Permalink to this headline">¶</a></h4>
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</div>
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</div>
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<div class="section" id="assets">
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<h3>Assets<a class="headerlink" href="#assets" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="trading-controls">
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<h3>Trading Controls<a class="headerlink" href="#trading-controls" title="Permalink to this headline">¶</a></h3>
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<p>Zipline provides trading controls to help ensure that the algorithm is
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performing as expected. The functions help protect the algorithm from certian
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bugs that could cause undesirable behavior when trading with real money.</p>
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</div>
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<div class="section" id="simulation-parameters">
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<h3>Simulation Parameters<a class="headerlink" href="#simulation-parameters" title="Permalink to this headline">¶</a></h3>
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<div class="section" id="commission-models">
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<h4>Commission Models<a class="headerlink" href="#commission-models" title="Permalink to this headline">¶</a></h4>
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</div>
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<div class="section" id="slippage-models">
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<h4>Slippage Models<a class="headerlink" href="#slippage-models" title="Permalink to this headline">¶</a></h4>
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</div>
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</div>
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<div class="section" id="pipeline">
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<h3>Pipeline<a class="headerlink" href="#pipeline" title="Permalink to this headline">¶</a></h3>
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<p>For more information, see <a class="reference internal" href="#pipeline-api"><span>Pipeline API</span></a></p>
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</div>
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<div class="section" id="miscellaneous">
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<h3>Miscellaneous<a class="headerlink" href="#miscellaneous" title="Permalink to this headline">¶</a></h3>
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</div>
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</div>
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<div class="section" id="pipeline-api">
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<span id="id1"></span><h2>Pipeline API<a class="headerlink" href="#pipeline-api" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="built-in-factors">
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<h3>Built-in Factors<a class="headerlink" href="#built-in-factors" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="pipeline-engine">
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<h3>Pipeline Engine<a class="headerlink" href="#pipeline-engine" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="data-loaders">
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<h3>Data Loaders<a class="headerlink" href="#data-loaders" title="Permalink to this headline">¶</a></h3>
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</div>
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</div>
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<div class="section" id="asset-metadata">
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<h2>Asset Metadata<a class="headerlink" href="#asset-metadata" title="Permalink to this headline">¶</a></h2>
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</div>
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<div class="section" id="trading-calendar-api">
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<h2>Trading Calendar API<a class="headerlink" href="#trading-calendar-api" title="Permalink to this headline">¶</a></h2>
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</div>
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<div class="section" id="data-api">
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<h2>Data API<a class="headerlink" href="#data-api" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="writers">
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<h3>Writers<a class="headerlink" href="#writers" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="readers">
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<h3>Readers<a class="headerlink" href="#readers" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="bundles">
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<h3>Bundles<a class="headerlink" href="#bundles" title="Permalink to this headline">¶</a></h3>
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<dl class="data">
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<dt id="zipline.data.bundles.bundles">
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<code class="descclassname">zipline.data.bundles.</code><code class="descname">bundles</code><a class="headerlink" href="#zipline.data.bundles.bundles" title="Permalink to this definition">¶</a></dt>
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<dd><p>The bundles that have been registered as a mapping from bundle name to bundle
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data. This mapping is immutable and should only be updated through
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<code class="xref py py-func docutils literal"><span class="pre">register()</span></code> or
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<code class="xref py py-func docutils literal"><span class="pre">unregister()</span></code>.</p>
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</dd></dl>
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</div>
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</div>
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<div class="section" id="utilities">
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<h2>Utilities<a class="headerlink" href="#utilities" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="caching">
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<h3>Caching<a class="headerlink" href="#caching" title="Permalink to this headline">¶</a></h3>
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</div>
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<div class="section" id="command-line">
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<h3>Command Line<a class="headerlink" href="#command-line" title="Permalink to this headline">¶</a></h3>
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