d代码：
# __author__ = liukun
# coding:utf-8
line = input("please input the config \n :")
#提示输入字符
#输入{"backend":"www.oldboy.org","record":{"server":"100.1.70.9","weight":20,"maxconm":3000}}
a_dict = eval(line)#转换为字典
dict_b = a_dict['record']
line_b = a_dict['backend']
file_Read = open("config")#打开配置文件
file_Write = open("config.bak", 'w')#打开临时文件
file_test = file_Read.readline()#按行读取配置文件
while ('' != file_test):
line = file_test.split()
if line.count('backend') == 1 and line.count(a_dict['backend']) == 1 : #匹配域名所在行
file_Write.write('\n' + file_test)
string = "server %s weight %s maxconn %s" %(dict_b['server'], dict_b['weight'],dict_b['maxconm'])
#写入值太长,先用变量格式化.
file_Write.write('\t'*2 + string + '\n')#添加 两个tab保持缩进对齐,末尾换行
file_test = file_Read.readline()
else:
file_Write.write(file_test)
file_test = file_Read.readline()
file_Read.close()
file_Write.close()#遍历完毕,关闭文件
file_Read_2 = open("config.bak") #将 bak 文件内容回写源文件 config
file_Write_2 = open("config", 'w')
file_test_2 = file_Read_2.readline()
while ('' != file_test_2):
file_Write_2.write(file_test_2)
file_test_2 = file_Read_2.readline()
file_Read_2.close()
file_Write_2.close()
config：
global
log 127.0.0.1 local2
daemon
maxconn 256
log 127.0.0.1 local2 info
defaults
log global
mode http
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
option dontlognull listen stats :8888
stats enable
stats uri /admin
stats auth admin:1234 frontend oldboy.org
bind 0.0.0.0:80
option httplog
option httpclose
option forwardfor
log global
acl www hdr_reg(host) -i www.oldboy.org
use_backend www.oldboy.org if www backend www.oldboy.org
server 100.1.70.9 weight 20 maxconn 31111
server 100.1.70.9 weight 20 maxconn 3000
server 100.1.70.9 weight 20 maxconn 3000
server 100.1.70.9 weight 20 maxconn 344444
server 100.1.70.9 weight 20 maxconn 3000
server 100.1.70.9 weight 20 maxconn 3000
server 100.1.7.9 100.1.7.9 weight 20 maxconn 3000
