[英]How to read and list a tgz file in python3?
In python 3 (3.6.8) I want to read a gzipped tar file and list its content. 在python 3(3.6.8)中,我想读取gzip压缩的tar文件并列出其内容。
I found this solution which yields an error 我找到了产生错误的解决方案
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
Searching for this error in found this suggestion so I tried the following code snippet: 在搜索此错误时发现了此建议,因此我尝试了以下代码段:
with open(out_file) as fd:
gzip_fd = gzip.GzipFile(fileobj=fd)
tar = tarfile.open(gzip_fd.read())
which yields the same error! 产生相同的错误!
So how to do it right? 那么怎么做对呢?
Even when looking at the actual documentation here I came up with the following code: 即使在查看实际文档时,我也想出了以下代码:
tar = tarfile.open(out_file, "w:gz")
for member in tar.getnames():
print(tar.extractfile(member).read())
which finally worked without errors - but did not print any content of the tar archive on the screen! 最终没有任何错误-但没有在屏幕上打印tar存档的任何内容!
The tar file is well formatted and contains folders and files. tar文件格式正确,包含文件夹和文件。 (I need to try to share this file)
(我需要尝试共享此文件)
When you open
a file without specifying mode
it defaults to reading it as text. 当您
open
文件而不指定mode
,默认情况mode
将其读取为文本。 You need to open the file as raw byte stream using mode='rb'
flag then feed it to gzip reader 您需要使用
mode='rb'
标志将文件作为原始字节流打开,然后将其送入gzip阅读器
with open(out_file, mode='rb') as fd:
gzip_fd = gzip.GzipFile(fileobj=fd)
tar = tarfile.open(gzip_fd.read())
The python-archive module (available on pip) could help you: python-archive模块(可在pip上获得)可以帮助您:
from archive import extract
file = "you/file.tgz"
try:
extract(file, "out/%s.raw" % (file), ext=".tgz")
except:
# could not extract
pass
Available extensions are (v0.2): '.zip', '.egg', '.jar', '.tar', '.tar.gz', '.tgz', '.tar.bz2', '.tz2' 可用的扩展名是(v0.2):'.zip','。egg','。jar','。tar','。tar.gz','。tgz','。tar.bz2','。 tz2'
More info: https://pypi.org/project/python-archive/ 更多信息: https : //pypi.org/project/python-archive/
Not sure why it did not work before, but the following solution works for me in order to list the files and folders of a gzipped tar archive with python 3.6 : 不知道为什么以前不起作用,但是以下解决方案对我有用,以便使用python 3.6列出gzip压缩tar存档的文件和文件夹 :
tar = tarfile.open(filename, "r:gz")
print(tar.getnames())
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