题解 | 配置文件恢复

import re
import sys
构造双层字典
dic = {
    "reset": {"board": "board fault"},
    "board": {"add": "where to add", "delete": "no board at all"},
    "reboot": {"backplane": "impossible"},
    "backplane": {"abort": "install first"},
}
wrong = 'unknown command'
for line in sys.stdin:
    a = line.split()
    if len(a)==1:
        if a[0] == 'reset'[:len(a[0])]:
            print('reset what')
            continue
        else :
            print(wrong)
            continue
    m0,m1 = a
    count = 0
    res = wrong
    for i in dic.keys():
        if m0 == i[:len(m0)]:
            for x in dic[i].keys():
                if m1 == x[:len(m1)]:
                    count +=1
                    res = dic[i][x]
    if count>1:
        print(wrong)
    else:
        print(res)