使用Python检查zip文件中是否存在目录 [英] Check if a directory exists in a zip file with Python

问题描述

最初我想使用 os.path.isdir 但我认为这不适用于 zip 文件.有没有办法查看 zip 文件并验证此目录是否存在?我想尽可能避免使用 unzip -l "$@" ，但如果这是唯一的解决方案，那么我想我别无选择.

Initially I was thinking of using os.path.isdir but I don't think this works for zip files. Is there a way to peek into the zip file and verify that this directory exists? I would like to prevent using unzip -l "$@" as much as possible, but if that's the only solution then I guess I have no choice.

推荐答案

只需检查文件名末尾的/"即可.

Just check the filename with "/" at the end of it.

import zipfile

def isdir(z, name):
    return any(x.startswith("%s/" % name.rstrip("/")) for x in z.namelist())

f = zipfile.ZipFile("sample.zip", "r")
print isdir(f, "a")
print isdir(f, "a/b")
print isdir(f, "a/X")

你用这条线

any(x.startswith("%s/" % name.rstrip("/")) for x in z.namelist())

因为存档可能不明确包含目录；只是一个带有目录名称的路径.

because it is possible that archive contains no directory explicitly; just a path with a directory name.

执行结果:

$ mkdir -p a/b/c/d
$ touch a/X
$ zip -r sample.zip a
adding: a/ (stored 0%)
adding: a/X (stored 0%)
adding: a/b/ (stored 0%)
adding: a/b/c/ (stored 0%)
adding: a/b/c/d/ (stored 0%)

$ python z.py
True
True
False

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