python 高效去重复 支持GB级别大文件的示例代码

如下所示：

#coding=utf-8
 
import sys, re, os
 
def getdictlist(dict):
  regx = '''[\w\~`\!\@\#\$\%\^\&\*\(\)\_\-\+\=\[\]\{\}\:\;\,\.\/\<\>\?]+'''
  with open(dict) as f:
    data = f.read()
    return re.findall(regx, data)
 
def rmdp(dictlist):
  return list(set(dictlist))
 
def filesave(dictrmdp, out):
  with open(out, 'a') as f:
    for line in dictrmdp:
      f.write(line + '\n')
 
def main():
  try:
    dict = sys.argv[1].strip()
    out = sys.argv[2].strip()
  except exception, e:
    print 'error:', e
    me = os.path.basename(__file__)
    print 'usage: %s <input> <output>' %me
    print 'example: %s dict.txt dict_rmdp.txt' %me
    exit()
 
  dictlist = getdictlist(dict)
  dictrmdp = rmdp(dictlist)
  filesave(dictrmdp, out)
   
if __name__ == '__main__':
  main()

以上这篇python 高效去重复 支持gb级别大文件的示例代码就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。