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我正在尝试在 Xubuntu 22.04 中安装 PyRenamer.deb：https://launchpad.net/pyrenamer
Pyrenamer 是用 Python2 编写的，并且有几个 .deb 包依赖项，我已经下载并收集了这些依赖项。
我已经安装了 Python2，并且已经正确设置了 Python Alternatives，因此：
$ python -V
Python 2.7.18
$ python2 -V
Python 2.7.18
$ python3 -V
Python 3.10.4
因此，当我尝试安装依赖项 .deb 包之一时：
$ sudo dpkg -i python-gobject-2_2.28.6-12ubuntu3_amd64.deb
出现此错误消息：
dpkg: dependency problems prevent configuration of python-gobject-2:
python-gobject-2 depends on python (<< 2.8); however:
Package python is not installed.
python-gobject-2 depends on python (>= 2.7~); however:
Package python is not installed.
当安装了 Python 2.7.18 并且正确设置了 python 运行时，为什么我会收到此错误消息？我试了又试，也上网搜索过相关帮助，但找不到解决这个问题的方法。
$ dpkg -l '*python*'
||/ Name Version Architecture Description
+++-=============================-========================-============-================================================================================
ii hexchat-python3:amd64 2.16.0-4build1 amd64 Python 3 plugin for HexChat
ii libpython-all-dbg:amd64 2.7.18-3 amd64 package depending on all supported Python2 debugging packages
ii libpython-all-dev:amd64 2.7.18-3 amd64 package depending on all supported Python2 development packages
un libpython-dbg <none> <none> (no description available)
un libpython-dev <none> <none> (no description available)
un libpython-stdlib <none> <none> (no description available)
ii libpython2-dbg:amd64 2.7.18-3 amd64 debug build of the Python2 interpreter (version 2.7)
ii libpython2-dev:amd64 2.7.18-3 amd64 header files and a static library for Python2
ii libpython2-stdlib:amd64 2.7.18-3 amd64 interactive high-level object-oriented language (Python2)
ii libpython2.7:amd64 2.7.18-13ubuntu1 amd64 Shared Python runtime library (version 2.7)
ii libpython2.7-dbg:amd64 2.7.18-13ubuntu1 amd64 Debug Build of the Python Interpreter (version 2.7)
ii libpython2.7-dev:amd64 2.7.18-13ubuntu1 amd64 Header files and a static library for Python (v2.7)
ii libpython2.7-minimal:amd64 2.7.18-13ubuntu1 amd64 Minimal subset of the Python language (version 2.7)
ii libpython2.7-stdlib:amd64 2.7.18-13ubuntu1 amd64 Interactive high-level object-oriented language (standard library, version 2.7)
ii libpython2.7-testsuite 2.7.18-13ubuntu1 all Testsuite for the Python standard library (v2.7)
ii libpython3-stdlib:amd64 3.10.4-0ubuntu2 amd64 interactive high-level object-oriented language (default python3 version)
ii libpython3.10:amd64 3.10.4-3 amd64 Shared Python runtime library (version 3.10)
ii libpython3.10-minimal:amd64 3.10.4-3 amd64 Minimal subset of the Python language (version 3.10)
ii libpython3.10-stdlib:amd64 3.10.4-3 amd64 Interactive high-level object-oriented language (standard library, version 3.10)
un libpython3.4-minimal <none> <none> (no description available)
un libpython3.5-minimal <none> <none> (no description available)
un libpython3.8-stdlib <none> <none> (no description available)
un python <none> <none> (no description available)
un python-4suite <none> <none> (no description available)
ii python-all 2.7.18-3 amd64 package depending on all supported Python2 runtime versions
ii python-all-dbg 2.7.18-3 amd64 package depending on all supported Python2 debugging packages
ii python-all-dev 2.7.18-3 amd64 package depending on all supported Python2 development packages
un python-apport
我按照该网页上的说明进行操作：
https://linuxconfig.org/install-python-2-on-ubuntu-20-04-focal-fossa-linux
安装 python2，使用：
$ sudo apt update
$ sudo apt install python2
我按照该网页上的说明进行操作：
https://linuxconfig.org/ubuntu-20-04-python-version-switch-manager
设置 python 的替代方案：
$ sudo update-alternatives --config python
There are 2 choices for the alternative python (providing /usr/bin/python).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3 2 auto mode
1 /usr/bin/python2 1 manual mode
2 /usr/bin/python3 2 manual mode
Press to keep the current choice[*], or type selection number: 1