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<div class="section" id="bluesky-plans-count">
<h1>bluesky.plans.count<a class="headerlink" href="#bluesky-plans-count" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="bluesky.plans.count">
<code class="descclassname">bluesky.plans.</code><code class="descname">count</code><span class="sig-paren">(</span><em>detectors</em>, <em>num=1</em>, <em>delay=None</em>, <em>*</em>, <em>md=None</em><span class="sig-paren">)</span><a class="headerlink" href="#bluesky.plans.count" title="Permalink to this definition">¶</a></dt>
<dd><p>Take one or more readings from detectors.</p>
<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>detectors</strong> (<em>list</em>) – list of ‘readable’ objects</li>
<li><strong>num</strong> (<em>integer, optional</em>) – <p>number of readings to take; default is 1</p>
<p>If None, capture data until canceled</p>
</li>
<li><strong>delay</strong> (<em>iterable or scalar, optional</em>) – time delay between successive readings; default is 0</li>
<li><strong>md</strong> (<em>dict, optional</em>) – metadata</li>
</ul>
</td>
</tr>
</tbody>
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<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">If <code class="docutils literal"><span class="pre">delay</span></code> is an iterable, it must have at least <code class="docutils literal"><span class="pre">num</span> <span class="pre">-</span> <span class="pre">1</span></code> entries or
the plan will raise a <code class="docutils literal"><span class="pre">ValueError</span></code> during iteration.</p>
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