极度不优雅

import sys

list1 = []
dic = {
    # 'reset': 'reset what',
    'reset board': 'board fault',
    'board add': 'where to add',
    'board delete': 'no board at all',
    'reboot backplane': 'impossible',
    'backplane abort': 'install first'
    }
while True:
    a = sys.stdin.readline().strip()
    if a == '':
        break
    list1.append(a)
for i in list1:
    j = i.split(' ')
    if len(j) < 1 or len(j) > 2:
        print('unkonwn command')
    if len(j) == 1:
        if j[0] == ['reset'][0][:len(j[0])]:
            print('reset what')
        else:
            print('unknown command')
    elif len(j) == 2:
        list2 = []
        for key, value in dic.items():
            m = key.split(' ')
            if j[0] == m[0][:len(j[0])] and j[1] == m[1][:len(j[1])]:
                list2.append(value)
        if len(list2) == 1:
            print(list2[0])
        else:
            print('unknown command')