apt-get由于愚蠢的 Python 包，我无法在 Raspbian（Debian）上安装任何包。
我尝试过sudo dpkg --configure -a
但即便如此仍然出现这些错误！
消息：
Setting up python3 (3.4.2-2) ...
running python rtupdate hooks for python3.4...
dpkg-query: package 'gdebi-core' is not installed
Use dpkg --info (= dpkg-deb --info) to examine archive files,
and dpkg --contents (= dpkg-deb --contents) to list their contents.
Traceback (most recent call last):
File "/usr/bin/py3clean", line 210, in <module>
main()
File "/usr/bin/py3clean", line 196, in main
pfiles = set(dpf.from_package(options.package))
File "/usr/share/python3/debpython/files.py", line 53, in from_package
raise Exception("cannot get content of %s" % package_name)
Exception: cannot get content of gdebi-core
error running python rtupdate hook gdebi-core
dpkg-query: package 'python3-uno' is not installed
Use dpkg --info (= dpkg-deb --info) to examine archive files,
and dpkg --contents (= dpkg-deb --contents) to list their contents.
Traceback (most recent call last):
File "/usr/bin/py3clean", line 210, in <module>
main()
File "/usr/bin/py3clean", line 196, in main
pfiles = set(dpf.from_package(options.package))
File "/usr/share/python3/debpython/files.py", line 53, in from_package
raise Exception("cannot get content of %s" % package_name)
Exception: cannot get content of python3-uno
error running python rtupdate hook python3-uno
dpkg: error processing package python3 (--configure):
subprocess installed post-installation script returned error exit status 4
dpkg: dependency problems prevent configuration of python3-gi:
python3-gi depends on python3 (>= 3.4~); however:
Package python3 is not configured yet.
python3-gi depends on python3 (<< 3.5); however:
Package python3 is not configured yet.
dpkg: error processing package python3-gi (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of unattended-upgrades:
unattended-upgrades depends on python3; however:
Package python3 is not configured yet.
dpkg: error processing package unattended-upgrades (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-software-properties:
python3-software-properties depends on python3 (>= 3.2.3-3~); however:
Package python3 is not configured yet.
python3-software-properties depends on unattended-upgrades; however:
Package unattended-upgrades is not configured yet.
dpkg: error processing package python3-software-properties (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of dh-python:
dh-python depends on python3:any (>= 3.3.2-2~); however:
Package python3 is not configured yet.
dpkg: error processing package dh-python (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of software-properties-common:
software-properties-common depends on python3 (>= 3.2.3-3~); however:
Package python3 is not configured yet.
software-properties-common depends on python3-gi; however:
Package python3-gi is not configured yet.
software-properties-common depends on python3-software-properties; however:
Package python3-software-properties is not configured yet.
dpkg: error processing package software-properties-common (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-apt:
python3-apt depends on python3 (<< 3.5); however:
Package python3 is not configured yet.
python3-apt depends on python3 (>= 3.4~); however:
Package python3 is not configured yet.
dpkg: error processing package python3-apt (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python3-dbus:
python3-dbus depends on python3 (>= 3.3~); however:
Package python3 is not configured yet.
python3-dbus depends on python3:any (>= 3.3.2-2~); however:
Package python3 is not configured yet.
python3-dbus depends on python3 (<< 3.5); however:
Package python3 is not configured yet.
dpkg: error processing package python3-dbus (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of python-software-properties:
python-software-properties depends on unattended-upgrades; however:
Package unattended-upgrades is not configured yet.
dpkg: error processing package python-software-properties (--configure):
dependency problems - leaving unconfigured
Errors were encountered while processing:
python3
python3-gi
unattended-upgrades
python3-software-properties
dh-python
software-properties-common
python3-apt
python3-dbus
python-software-properties
答案1
切换回 python 2.7
使用命令：
sudo update-alternatives --config python
如果出现错误：
update-alternatives: error: no alternatives for python
更新您的update-alternatives内容如下：
ls /usr/bin | grep python | columns
示例输出：
dh_python2 idle-python3.4 python2 python3 python3.4m
dh_python3 python python2.7 python3.4 python3m
您有python2.7和python3.4，运行：
sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1
sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.4 2
看update-alternatives --help
现在你可以运行了；
sudo update-alternatives --config python
示例输出：
There are 2 choices for the alternative python (providing /usr/bin/python).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3.4 2 auto mode
1 /usr/bin/python2.7 1 manual mode
2 /usr/bin/python3.4 2 manual mode
Press enter to keep the current choice[*], or type selection number: 1
要将其设为python2.7默认值，请选择 1
跑步 ：
sudo dpkg --configure -a
sudo apt update
使用命令history获取*-python破坏系统的最新安装的软件包（例如；python-scapy）然后将其删除：
sudo apt-get remove python-scapy
完成后，你可以恢复python3.4使用该update-alternative命令