Python实现的txt文件去重功能示例
更新时间:2018年07月07日 09:00:36 作者:人饭子
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这篇文章主要介绍了Python实现的txt文件去重功能,涉及Python针对txt文本文件的读写、字符串遍历、判断相关操作技巧,需要的朋友可以参考下
本文实例讲述了Python实现的txt文件去重功能。分享给大家供大家参考,具体如下:
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# -*- coding:utf-8 -*-
#! python2
import
shutil
a
=
0
readDir
=
"/Users/Administrator/Desktop/old.txt"
#old
writeDir
=
"/Users/Administrator/Desktop/new.txt"
#new
# txtDir = "/home/Administrator/Desktop/1"
lines_seen
=
set
()
outfile
=
open
(writeDir,
"w"
)
f
=
open
(readDir,
"r"
)
for
line
in
f:
if
line
not
in
lines_seen:
a
+
=
1
outfile.write(line)
lines_seen.add(line)
print
(a)
print
(
'\n'
)
outfile.close()
print
(
"success"
)
|
其中old.tx如下:
www.jb51.net
www.baidu.com
www.sina.com.cn
www.jb51.net
www.google.com
www.sohu.com
www.jb51.net
www.163.com
运行后new.txt内容如下:
www.jb51.net
www.baidu.com
www.sina.com.cn
www.google.com
www.sohu.com
www.163.com