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python简单读取大文件

本文实例讲述了python简单读取大文件的方法。分享给大家供大家参考,具体如下:

Python读取大文件(GB级别)采用的办法很简单:

with open(...) as f:
 for line in f:
  <do something with line> 

例如:

with open(filepath,'r') as infile:
 for line in infile:
  print line 

一切都交给python解释器处理,读取效率很高,且占用资源少。

stackoverflow参考链接:How to read large file, line by line in python - Stack Overflow

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