如何使用 python apt API 删除 debian 软件包

Question

我正在 Linux mint 上尝试这个。我一直在研究如何使用 python-apt API 删除软件包。下面的代码是我所能想到的，但是当我运行它时什么也没有发生。我现在正在尝试删除一个包，但稍后我想从文本文件中删除一个包列表。我尝试使用 this post 中找到的答案并重新设计它以进行删除，但我的逻辑不起作用。请给我一些意见。

#!/usr/bin/env python
# aptuninnstall.py

import apt
import sys


def remove():
    pkg_name = "chromium-browser"
    cache = apt.cache.Cache()
    cache.update()
    pkg = cache[pkg_name]
    pkg.marked_delete
    resolver = apt.cache.ProblemResolver(cache)
    for pkg in cache.get_changes():
        if pkg.is_installed:
            resolver.remove(pkg)
        else:
            print (pkg_name + " not installed so not removed")
    try:
        cache.commit()
    except Exception, arg:
        print >> sys.stderr, "Sorry, package removal failed [{err}]".format(err=str(arg))

remove()

Answer 1

阅读文档并尝试不同的方法后，我或多或少通过编写以下代码解决了我的问题。如果有人有更好的方法，请post。我还想学很多东西

#!/usr/bin/env python
# aptremove.py

import apt
import apt_pkg
import sys


def remove():
    pkg_name = "chromium-browser"
    cache = apt.cache.Cache()
    cache.open(None)
    pkg = cache[pkg_name]
    cache.update()
    pkg.mark_delete(True, purge=True)
    resolver = apt.cache.ProblemResolver(cache)

    if pkg.is_installed is False:
        print (pkg_name + " not installed so not removed")
    else:
        for pkg in cache.get_changes():
            if pkg.mark_delete:
                print pkg_name + " is installed and will be removed"
                print " %d package(s) will be removed" % cache.delete_count
                resolver.remove(pkg)
    try:
        cache.commit()
        cache.close()
    except Exception, arg:
        print >> sys.stderr, "Sorry, package removal failed [{err}]".format(err=str(arg))

remove()

为了从文件中获取包列表，我暂时采用了这种方法。

#!/usr/bin/env python
# aptremove.py

import apt
import apt_pkg
import sys


def remove():
    cache = apt.cache.Cache()
    cache.open(None)
    resolver = apt.cache.ProblemResolver(cache)

    with open("apps-to-remove") as input:
        for pkg_name in input:
            pkg = cache[pkg_name.strip()]
            pkg.mark_delete(True, purge=True)
        input.close()
        cache.update()

    if pkg.is_installed is False:
        print (pkg_name + " not installed so not removed")
    else:
        for pkg in cache.get_changes():
            if pkg.mark_delete:
                print pkg_name + " is installed and will be removed"
                print " %d package(s) will be removed" % cache.delete_count
                resolver.remove(pkg)
    try:
        cache.commit()
        cache.close()
        print "starting"
    except Exception, arg:
        print >> sys.stderr, "Sorry, package removal failed [{err}]".format(err=str(arg))

remove()

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