题解 | #配置文件恢复#

import sys
import re
getline=lambda:sys.stdin.readline().strip()
line=getline()
d={'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 line:
    if len(line.split(" ")) == 1:
        n=0
        for k in d.keys():
            if re.match("^%s.*"%line, k):
                if (len(k.split(' ')))==1:
                    print(d[k])
                    n=n+1
        if n==0:
            print("unknown command")
    else:
        n=0
        for k in d.keys():
            if re.match("^%s.*%s.*"%(line.split(" ")[0],line.split(" ")[1]), k):
                if (len(k.split(' ')))==2:
                    print(d[k])
                    n=n+1
        if n==0:
            print("unknown command")


    line=getline()