Python zipfile 性能问题 - V2EX
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U87

Python zipfile 性能问题

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  •   U87 Feb 7, 2021 2729 views
    This topic created in 1919 days ago, the information mentioned may be changed or developed.

    众所周知 zipfile 是 python 解压和压缩文件的库, 我这边用 zipfile 的 extractall 方法解压一个大文件 600 多 M 的压缩包,竟然要半个小时。。。想问下是 zipfile 本身性能问题吗,有什么快速方法吗

    4 replies    2021-02-08 14:25:26 +08:00
    laminux29
        1
    laminux29  
       Feb 7, 2021
    zipfile 是 Python 实现的,不是 C 库,这是性能差的关键。

    如果需要压缩的文件数量很多,建议用命令行或 cpp 来进行压缩或解压缩。
    noqwerty
        2
    noqwerty  
       Feb 7, 2021
    subprocess.check_output() 用 7zip 之类的软件去做解压吧,花很多时间在这上面真的不值得。zipfile 自己文档里都写了 Decryption is extremely slow as it is implemented in native Python rather than C.
    U87
        3
    U87  
    OP
       Feb 8, 2021
    @noqwerty 好的,谢谢,zipfile 文档里那段话我也看到了,但同事拿相同的包用 java 解压,几十秒。。
    U87
        4
    U87  
    OP
       Feb 8, 2021
    @laminux29 用命令行了,一开始也想过,但觉得没有用 zipfile 优雅
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