1 def choice():
  2     print(‘‘‘
  3     1   查找
  4     2   删除
  5     3   添加
  6     4   修改
  7     ‘‘‘)
  8 def forlist():
  9     with open("test2", encoding="utf8", mode="r+") as w:
 10         for line in w:
 11             print(line.strip())
 12 
 13 
 14 def check():
 15     usr=input("输入你要查找的域名")
 16     l=[]
 17     flag=False
 18     with open("test",encoding="utf8") as f:
 19         for line in f:
 20             if line.startswith("backend") and usr in line:
 21                 flag = True
 22                 continue
 23             if line.startswith("backend") and flag:
 24                 break
 25             if flag:
 26                 l.append(line.strip())
 27         for i in l:
 28             print (i)
 29 
 30 def remove():
 31     usr=input("输入你要移除的域名")
 32     flag = True
 33     # www.oldboy1.org
 34     with open("test", encoding="utf8") as f:
 35         with open("test2", encoding="utf8", mode="r+") as w:
 36             for line in f:
 37                 if line.startswith("backend") and usr in line:
 38                     flag = False
 39                     continue
 40                 if line.startswith("backend"):
 41                     flag = True
 42                 if flag:
 43                     w.write(line)
 44             forlist()
 45 
 46 def add():
 47     usr=input("输入你要添加的内容")
 48     print({‘bakend‘: ‘www.oldboy.org‘,
 49          ‘record‘: {‘server‘: ‘100.1.7.9‘, ‘weight‘: 20, ‘maxconn‘: 30}})
 50     arg=eval(usr)
 51     add = """%s %s
 52             %s %s %s %s %s %s %s
 53     """ % (‘bakend‘, arg[‘bakend‘], ‘record‘, ‘server‘, arg[‘record‘][‘server‘],
 54            ‘weight‘, arg[‘record‘][‘weight‘], ‘maxconn‘, arg[‘record‘][‘weight‘])
 55     flag = True
 56     with open("test1", encoding="utf8", mode="r+") as f, open("test2", encoding="utf8", mode="w+") as w:
 57         for line in f:
 58             if line.startswith("backend") and "www.oldboy1.org" in line:
 59                 w.write(add)
 60                 print()
 61             if line.startswith("backend"):
 62                 flag = True
 63             if flag:
 64                 w.write(line)
 65         forlist()
 66 
 67 def change():
 68     usr=input("输入你要修改的内容")
 69     arg=eval(usr)
 70     print({‘bakend‘: ‘www.oldboy.org‘,‘record‘: {‘server‘: ‘100.1.7.9‘, ‘weight‘: 20, ‘maxconn‘: 30}})
 71     add = """%s %s
 72             %s %s %s %s %s %s %s
 73     """ % (‘bakend‘, arg[‘bakend‘], ‘record‘, ‘server‘, arg[‘record‘][‘server‘],
 74            ‘weight‘, arg[‘record‘][‘weight‘], ‘maxconn‘, arg[‘record‘][‘weight‘])
 75     # usr=input(">>>")
 76     flag = True
 77     with open("test1", encoding="utf8", mode="r+") as f, open("test2", encoding="utf8", mode="w") as w:
 78         for line in f:
 79             if line.startswith("backend") and ‘www.oldboy1.org‘ in line:
 80                 flag = False
 81                 continue
 82             if line.startswith("backend"):
 83                 w.write(add)
 84                 flag = True
 85             if flag:
 86                 w.write(line)
 87         forlist()
 88 
 89 def main():
 90     while True:
 91         choice()
 92         usr=input("输入你要做的操作")
 93         if usr=="1":
 94             check()
 95         elif usr=="2":
 96             remove()
 97         elif usr=="3":
 98             add()
 99         elif usr=="4":
100             change()
101         elif usr=="q":
102             break
103 main()