python 2.7.5 获取文本关键字符所在行

#!/usr/bin/env python
#-*- coding: UTF- -*-
from __future__ import print_function
import time,os,sys,re,subprocess,commands,itertools,readline
 
dt=time.localtime()
ft="    %Y-%m-%d %H:%M:%S %p %A"
date=time.strftime(ft,dt)
print("     当前系统时间为:\n",date)
 
#---------------------------------------------------------------------------------
#f0 = open('/etc/ssh/sshd_config','r')
#f1 = f0.readline()
#def get_number():
    #sshd_config = "/etc/ssh/sshd_config"
    #with open(sshd_config,'r') as f:
        #for line in f.readlines():
            #try:
                #if'Port' in line:
                    #strlist = line.split('Port ')
                    #for sshdport in strlist[:]:
                        #print(sshdport)
            #except:
                #print('获取失败')
#if __name__ == '__main__':
    #get_number()
#---------------------------------------------------------------------------------
#f = open('/etc/ssh/sshd_config','r')
#lines = f.readlines()
#for line in lines:
    #if "Port " in line:
       #print(line)
 
#[root@localhost ~]# python .py
     #当前系统时间为:
     #-- :: PM Thursday
#Port
#---------------------------------------------------------------------------------
 
#yum install -y python python-devel
 
#
#Port
#AddressFamily any
 
#with open('/etc/ssh/sshd_config') as infile, open('/root/1.txt', 'w') as outfile:
    #copy = False
    #for line in infile:
        #if line.strip() == "#":
            #copy = True
        #elif line.strip() == "#AddressFamily any":
            #copy = False
        #elif copy:
            #outfile.write(line)
#[root@localhost ~]# cat .txt
#Port 
 
#---------------------------------------------------------------------------------
#pathfile = raw_input('文件绝对路径:')
#keyname = raw_input('查找内容:')
 
#FoundFlag = False
#f00 = open(pathfile)
#f01 = f00.readline()
#while f01:
    #if f01.find(keyname) == 0:
        #FoundFlag = True
        #print("---------------------------------------------------------------------------------")
        #print("   所在行： " + f01, end='')
        #print("---------------------------------------------------------------------------------")
        #break
    #else:
        #f01 = f00.readline()
#f00.close()
#if FoundFlag == False:
    #print("获取失败.....！")
#raw_input()
 
# 从下标0开始，查找在字符串里第一个出现的子串，返回结果：
 
#[root@localhost ~]# python .py
#文件绝对路径:/etc/ssh/sshd_config
#查找内容:#Port
#---------------------------------------------------------------------------------
   #所在行： #Port
#---------------------------------------------------------------------------------
 
#[root@localhost ~]# python .py
#文件绝对路径:/etc/ssh/sshd_config
#查找内容:
#获取失败.....！
#Traceback (most recent call last):
  #File "1.py", line , in <module>
    #raw_input()
#KeyboardInterrupt
#[root@localhost ~]# python .py
#文件绝对路径:/etc/ssh/sshd_config
#查找内容:Port
#获取失败.....！
#find 模块查询只能从左到右
#---------------------------------------------------------------------------------