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<span class="refentrytitle">pyeval Opcodes</span>
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<p>pyeval — Evaluate a generic Python expression and store the result in a Csound variable at k-time or i-time (i suffix).
</p>
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<div class="refsect1" title="Syntax">
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<h2>Syntax</h2>
<pre class="synopsis">kresult <span class="command"><strong>pyeval</strong></span> "expression"</pre>
<pre class="synopsis">iresult <span class="command"><strong>pyevali</strong></span> "expression"</pre>
<pre class="synopsis">kresult <span class="command"><strong>pyleval</strong></span> "expression"</pre>
<pre class="synopsis">iresult <span class="command"><strong>pylevali</strong></span> "expression"</pre>
<pre class="synopsis">kresult <span class="command"><strong>pyevalt</strong></span> ktrigger, "expression"</pre>
<pre class="synopsis">kresult <span class="command"><strong>pylevalt</strong></span> ktrigger, "expression"</pre>
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<div class="refsect1" title="Description">
<a id="idp39657024"></a>
<h2>Description</h2>
<p>These opcodes evaluate a generic Python expression and store the
result in a Csound variable at k-time or i-time (i suffix).</p>
<p>The expression must evaluate in a float or an object that can be
cast to a float.</p>
<p>They can be used effectively to trasfer data from a Python
object into a Csound variable.</p>
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<div class="refsect1" title="Example of the pyeval Opcode Group">
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<h2>Example of the pyeval Opcode Group</h2>
<p>The code:</p>
<pre class="programlisting">
k1 <span class="opc">pyeval</span> "v1"</pre>
<p>will copy the content of the Python variable <span class="emphasis"><em>v1</em></span> into the Csound variable <span class="emphasis"><em>k1</em></span> at each k-time.</p>
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<div class="refsect1" title="Credits">
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<h2>Credits</h2>
<p>Copyright (c) 2002 by Maurizio Umberto Puxeddu. All rights
reserved. Portions copyright (c) 2004 and 2005 by Michael Gogins. This
document has been updated Sunday 25 July 2004 and 1 February 2005 by
Michael Gogins.</p>
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