本文实例讲述了Python实现字典去除重复的方法。分享给大家供大家参考，具体如下：
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#!/usr/bin/env python
# encoding: utf-8
#字典去重小代码
import sys
import os
import platform
try:
pass
except:
print '''you have something wrong this is a simple jiaoben '''
sys.exit()
why = 'why.txt'
for i in xrange(len(sys.argv)):
if(i>=1):
other = sys.argv[i]
if os.path.exists(other):
pass
else:
print other + ' file not find'
sys.exit()
if 'Windows' in platform.system():
os.system("type "+other+" >> "+why)
else:
os.system("cat "+other+" >> "+why)
yuan = open('why.txt','r')
dirc = open('whynot.txt','w')
for line in set(yuan.readlines()):
if line == '' or line == '\r\n':
pass
else:
dirc.writelines(line)
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很简单的思路 把文件放入到why.txt中 然后再去重得到whynot.txt
Usage: quchong.py 1.txt 2.txt 3.txt 等等
希望本文所述对大家Python程序设计有所帮助。