题解 | #配置文件恢复#

import sys
a={'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'}
keys=a.keys()
key=list(keys)
values=a.values()
value=list(values)
l=len(key)
for line in sys.stdin:
        n=line.strip().split()
        if len(n)==1:
            string=[]
            for j in range(l):
                c=key[j].split()
                if len(c)==1:
                    if n[0]==c[0][:len(n[0])]:
                        string.append(a[key[j]])
            if len(string)==1:
                print(string[0])
            else:
                print("unknown command")
        elif len(n)==2:
            string=[]
            for k in range(l):
                b=key[k].split()
                if len(b)==2:
                    if n[0]==b[0][:len(n[0])]:
                        if n[1] == b[1][:len(n[1])]:
                            string.append(a[key[k]])
            if len(string)==1:
                print(string[0])
            else:
                print("unknown command")
        else:
            continue