要读取个大文件,文件大概是3G左右,担心read会出现内存溢出的情况,网上找了个靠谱的用法:
with open(...) as f:
for line in f:
<do something with line>
The with
statement handles opening and closing the file, including if an exception is raised in the inner block. The for line in f
treats the file object f
as an iterable, which automatically uses buffered IO and memory management so you don‘t have to worry about large files.
There should be one -- and preferably only one -- obvious way to do it.
时间: 2024-08-27 09:08:07