使用子进程 python 库使用 7zip 解压缩文件 [英] Use subprocess python library to unzip a file using 7zip

问题描述

我想使用 7zip 可执行文件用 Python 解压缩文件.在 Perl 中，这非常简单:

I would like to unzip a file with Python using 7zip executable. In Perl this is pretty straightforward:

$zip_exe_path = "C:\\Dropbox\\7-zip\\7z.exe";
$logfile_path = "C:\\Temp\\zipped_file.7z";
system ("$zip_exe_path x $log_file_path -y");

我试过了:

import subprocess
zip_exe_path = "C:\\Dropbox\\7-zip\\7z.exe"
logfile_path = "C:\\Temp\\zipped_file.7z"
subprocess.call(['zip_exe_path','x','logfile_path','-y'])

当我这样做时，我收到此错误:

When I do so I get this error:

FileNotFoundError: [WinError 2] The system cannot find the file specified

感谢您的帮助！

推荐答案

错误是您正在传递 strings 'zip_exe_path' 和 'logfile_path' 而不是这些变量的值.

The error is that you are passing the strings 'zip_exe_path' and 'logfile_path' instead of the values of those variables.

import subprocess
zip_exe_path = "C:\\Dropbox\\7-zip\\7z.exe"
logfile_path = "C:\\Temp\\zipped_file.7z"
subprocess.call([zip_exe_path, 'x', logfile_path, '-y'])

您当然可以使用 shell=True 将命令作为单个字符串传递，但 shell 不会添加任何值并且 会产生一些开销(和风险！)

You can of course pass the command as a single string with shell=True but the shell does not add any value and incurs some overhead (and risk!)

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