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

希望本文所述对大家Python程序设计有所帮助。