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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 env_absent(name,
               user='root'):
    '''
    Verifies that the specified environment variable is absent from the crontab
    for the specified user

    name
        The name of the environment variable to remove from the user crontab

    user
        The name of the user whose crontab needs to be modified, defaults to
        the root user
    '''

    name = name.strip()
    ret = {'name': name,
           'result': True,
           'changes': {},
           'comment': ''}

    if __opts__['test']:
        status = _check_cron_env(user, name)
        ret['result'] = None
        if status == 'absent':
            ret['result'] = True
            ret['comment'] = 'Cron env {0} is absent'.format(name)
        elif status == 'present' or status == 'update':
            ret['comment'] = 'Cron env {0} is set to be removed'.format(name)
        return ret

    data = __salt__['cron.rm_env'](user, name)
    if data == 'absent':
        ret['comment'] = "Cron env {0} already absent".format(name)
        return ret
    if data == 'removed':
        ret['comment'] = ("Cron env {0} removed from {1}'s crontab"
                          .format(name, user))
        ret['changes'] = {user: name}
        return ret
    ret['comment'] = ("Cron env {0} for user {1} failed to commit with error {2}"
                      .format(name, user, data))
    ret['result'] = False
    return ret