Python Wrappers for 7-Zip Operations

Yes, there are several Python libraries and wrappers available for executing 7-Zip operations programmatically. Depending on whether you require a pure Python implementation or a wrapper around the native 7-Zip executable or shared libraries, you can choose from modern solutions like py7zr, libarchive-c, or generic archive wrappers like patool.

1. py7zr (Recommended)

py7zr is currently the most popular, active, and fully featured Python library for working with 7z archives. Unlike traditional wrappers that require the native 7-Zip binary installed on your operating system, py7zr is written in pure Python.

It supports compression, extraction, archive inspection, multi-threading, and AES encryption.

Installation:

pip install py7zr

Extracting an Archive:

import py7zr

with py7zr.SevenZipFile('archive.7z', mode='r') as z:
    z.extractall(path='/path/to/extract')

Creating an Archive:

import py7zr

with py7zr.SevenZipFile('output.7z', mode='w') as z:
    z.writeall('/path/to/folder', 'folder_inside_archive')

2. patool

patool is a command-line wrapper that coordinates with existing system archivers, including native 7-Zip (7z or 7za). If you need the exact performance and specialized codec support of the native 7-Zip binary, patool manages the shell commands under the hood while providing a unified Python API.

Installation:

pip install patool

Usage:

import patoolib

# Extract an archive
patoolib.extract_archive("archive.7z", outdir="/path/to/extract")

# Create an archive
patoolib.create_archive("output.7z", ("file1.txt", "file2.txt"))

3. libarchive-c

libarchive-c provides Python bindings to the C library libarchive, which natively supports reading and writing 7z archives alongside ZIP, TAR, and RAR formats. It is suited for applications already relying on C-level archive handling.

Installation:

pip install libarchive-c

Extracting an Archive:

import libarchive.public

libarchive.public.extract_file('archive.7z')

4. Direct Subprocess Execution

If you need advanced 7-Zip parameters (such as custom dictionary sizes, solid block limits, or multi-volume splitting) that are not exposed by Python libraries, using Python's standard subprocess module to call the native 7z binary directly is often the most reliable method:

import subprocess

# Extract an archive with password protection
subprocess.run(['7z', 'x', 'archive.7z', '-o/path/to/extract', '-pSecretPassword', '-y'], check=True)

Summary

For most programmatic tasks requiring no external dependencies, py7zr is the standard and best-supported choice. If maximum compression speed or advanced CLI flags are necessary, driving the official 7-Zip executable via subprocess or patool provides full access to native engine capabilities.