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<h2 class="title"><a id="py"></a>Python Opcodes</h2>
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<h2 class="title" style="clear: both"><a id="PythonOpcodes"></a>Introduction</h2>
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<p>Using the Python opcode family, you can interact with a Python interpreter embedded in Csound in five ways:</p>
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<li class="listitem">Initialize the Python interpreter (the <a class="link" href="pyinit.html" title="pyinit Opcodes"><em class="citetitle">pyinit</em></a> opcodes),</li>
<li class="listitem">Run a statement (the <a class="link" href="pyrun.html" title="pyrun Opcodes"><em class="citetitle">pyrun</em></a> opcodes),</li>
<li class="listitem">Execute a script (the <a class="link" href="pyexec.html" title="pyexec Opcodes"><em class="citetitle">pyexec</em></a> opcodes),</li>
<li class="listitem">Invoke a callable and pass arguments (the <a class="link" href="pycall.html" title="pycall Opcodes"><em class="citetitle">pycall</em></a> opcodes),</li>
<li class="listitem">Evaluate an expression (the <a class="link" href="pyeval.html" title="pyeval Opcodes"><em class="citetitle">pyeval</em></a> opcodes), or</li>
<li class="listitem">Change the value of a Python object, possibly creating a new
Python object (the <a class="link" href="pyassign.html" title="pyassign Opcodes"><em class="citetitle">pyassign</em></a> opcodes);</li>
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<p>and you can do any of these things:</p>
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<li class="listitem">At i-time or at k-time,</li>
<li class="listitem">In the global Python namespace, or in a namespace specific
to an individual instance of a Csound instrument (local or "l" context),</li>
<li class="listitem">And can you can retrieve from 0 to 8 return values from
callables that accept N parameters.</li>
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<p>...this means that there are many Python-related opcodes. But
all of these opcodes share the same <span class="emphasis"><em>py</em></span> prefix, and have a regular
naming scheme:</p>
<pre class="programlisting">
"py" + [optional context prefix] + [action name] + [optional x-time suffix]</pre>
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