python 文件查找

#/usr/bin/python
#coding:utf8

#problem1:find file
#cat a.t
#hello world
#hello hello world
#统计文件a.t中hello的个数

import re

fp = file("a.t","r")#
count = 0
for s in fp.readlines():
    li = re.findall("hello",s)
    if len(li)>0:
        count+=len(li)
print "Search",count,"hello"

fp.close()

[user1@localhost Desktop]$ cd ~
[user1@localhost ~]$ ls
a.t      Documents           Music     Pictures   test.txt
a.t~     Downloads           new.txt   Public     test.txt~
Desktop  filefindreplace.py  new.txt~  Templates  Videos
[user1@localhost ~]$ vim filefindreplace.py
[user1@localhost ~]$ cat a.t
hello world
hello hello world
[user1@localhost ~]$ python filefindreplace.py
Search 3 hello
[user1@localhost ~]$