Python Opcodes
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## Python Opcodes

#### Introduction

Using the Python opcode family, you can interact with a Python3 interpreter embedded in Csound in five ways:

1. Initialize the Python interpreter (the pyinit opcodes),
2. Run a statement (the pyrun opcodes),
3. Execute a script (the pyexec opcodes),
4. Invoke a callable and pass arguments (the pycall opcodes),
5. Evaluate an expression (the pyeval opcodes), or
6. Change the value of a Python object, possibly creating a new Python object (the pyassign opcodes);

and you can do any of these things:

1. At i-time or at k-time,
2. In the global Python namespace, or in a namespace specific to an individual instance of a Csound instrument (local or "l" context),
3. And can you can retrieve from 0 to 8 return values from callables that accept N parameters.

...this means that there are many Python-related opcodes. But all of these opcodes share the same py prefix, and have a regular naming scheme:

    "py" + [optional context prefix] + [action name] + [optional x-time suffix]

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