def instruction_size(op, opc):
if op < opc.HAVE_ARGUMENT:<EOL><INDENT>return <NUM_LIT:2> if opc.version >= <NUM_LIT> else <NUM_LIT:1><EOL><DEDENT>else:<EOL><INDENT>return <NUM_LIT:2> if opc.version >= <NUM_LIT> else <NUM_LIT:3><EOL><DEDENT>
For a given opcode, `op`, in opcode module `opc`,
    return the size, in bytes, of an `op` instruction.

    This is the size of the opcode (1 byte) and any operand it has. In
    Python before version 3.6 this will be either 1 or 3 bytes.  In
    Python 3.6 or later, it is 2 bytes or a "word".