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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 namespace_present(name, **kwargs):
    '''
    Ensures that the named namespace is present.

    name
        The name of the namespace.

    '''
    ret = {'name': name,
           'changes': {},
           'result': False,
           'comment': ''}

    namespace = __salt__['kubernetes.show_namespace'](name, **kwargs)

    if namespace is None:
        if __opts__['test']:
            ret['result'] = None
            ret['comment'] = 'The namespace is going to be created'
            return ret

        res = __salt__['kubernetes.create_namespace'](name, **kwargs)
        ret['result'] = True
        ret['changes']['namespace'] = {
            'old': {},
            'new': res}
    else:
        ret['result'] = True if not __opts__['test'] else None
        ret['comment'] = 'The namespace already exists'

    return ret