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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _bin_op(instance, opnode, op, other, context, reverse=False):
 """Get an inference callable for a normal binary operation. If *reverse* is True, then the reflected method will be used instead. """

    if reverse:
        method_name = protocols.REFLECTED_BIN_OP_METHOD[op]
    else:
        method_name = protocols.BIN_OP_METHOD[op]
    return functools.partial(
        _invoke_binop_inference,
        instance=instance,
        op=op,
        opnode=opnode,
        other=other,
        context=context,
        method_name=method_name,
    )