<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def prepare_kwargs(all_kwargs, class_init_kwargs):
    '''
    Filter out the kwargs used for the init of the class and the kwargs used to
    invoke the command required.

    all_kwargs
        All the kwargs the Execution Function has been invoked.

    class_init_kwargs
        The kwargs of the ``__init__`` of the class.
    '''
    fun_kwargs = {}
    init_kwargs = {}
    for karg, warg in six.iteritems(all_kwargs):
        if karg not in class_init_kwargs:
            if warg is not None:
                fun_kwargs[karg] = warg
            continue
        if warg is not None:
            init_kwargs[karg] = warg
    return init_kwargs, fun_kwargs