Pythonのため、パッケージをインストールできません
愚かなPythonパッケージのため、Raspbian（Debian）にapt-getのパッケージをインストールできません。
Sudo dpkg --configure -aしようとしましたが、それでもこれらのエラーが発生します。
メッセージ：
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
python 2.7に戻る
次のコマンドを使用します：
Sudo update-alternatives --config python
エラーが発生した場合：
update-alternatives: error: no alternatives for python
次のようにupdate-alternativesを更新します。
ls /usr/bin | grep python | columns
サンプル出力：
dh_python2 idle-python3.4 python2 python3 python3.4m
dh_python3 python python2.7 python3.4 python3m
python2.7とpython3.4があり、次を実行します。
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
update-alternatives --helpをご覧ください
これで実行できます。
Sudo update-alternatives --config python
サンプル出力：
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
python2.7をデフォルトとして設定するには、1を選択します
実行：
Sudo dpkg --configure -a
Sudo apt update
コマンドhistoryを使用して、システムを破壊する最新のインストール済み*-pythonパッケージを取得し（たとえば、python-scapy）、それを削除します。
Sudo apt-get remove python-scapy
完了したら、python3.4コマンドを使用してupdate-alternativeに戻すことができます。