アンインストールできませんPython 3.6
元の3.5バージョンに触れることなく、3.6バージョンをアンインストールしたい。だから私は走った
Sudo apt-get remove python3.6
しかし、出力は次のとおりでした。
E: Unable to locate package python3.6
E: Couldn't find any package by glob 'python3.6'
E: Couldn't find any package by regex 'python3.6'
$ dpkg -l python3.6
dpkg-query: no packages found matching python3.6
$ dpkg -l python3
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-==============-============-============-=================================
ii python3 3.5.1-3 AMD64 interactive high-level object-ori
$ apt-cache policy python3
python3:
Installed: 3.5.1-3
Candidate: 3.5.1-3
Version table:
*** 3.5.1-3 500
500 http://in.archive.ubuntu.com/ubuntu xenial/main AMD64 Packages
100 /var/lib/dpkg/status
私の目標は buntu 16.04：python 3.6.5でnumpyを動作させることができないようですが、python 2.7.12 では問題なく動作します。 python2.7、python3.5、python 3.6のいずれでもコードを実行できません。コードを実行できる限り、どのバージョンのPythonでも問題ありません。
$ type python
python is hashed (/usr/bin/python)
$ type python3
python3 is hashed (/usr/local/bin/python3)
$ type python3.6
python3.6 is hashed (/usr/local/bin/python3.6)
$ apt list --installed 'python*'
Listing... Done
python/xenial-updates,now 2.7.12-1~16.04 AMD64 [installed]
python-all/xenial-updates,now 2.7.12-1~16.04 AMD64 [installed,automatic]
python-all-dev/xenial-updates,now 2.7.12-1~16.04 AMD64 [installed,automatic]
python-apt-common/xenial-updates,xenial-updates,now 1.1.0~beta1ubuntu0.16.04.1 all [installed]
python-crypto/xenial-updates,xenial-security,now 2.6.1-6ubuntu0.16.04.3 AMD64 [installed]
python-dbus/xenial,now 1.2.0-3 AMD64 [installed,automatic]
python-dev/xenial-updates,now 2.7.12-1~16.04 AMD64 [installed,automatic]
python-gi/xenial,now 3.20.0-0ubuntu1 AMD64 [installed,automatic]
python-ldb/xenial,now 2:1.1.24-1ubuntu3 AMD64 [installed]
python-minimal/xenial-updates,now 2.7.12-1~16.04 AMD64 [installed]
python-numpy/xenial,now 1:1.11.0-1ubuntu1 AMD64 [installed]
python-pip/xenial-updates,xenial-updates,now 8.1.1-2ubuntu0.4 all [installed]
python-pip-whl/xenial-updates,xenial-updates,now 8.1.1-2ubuntu0.4 all [installed,automatic]
python-pkg-resources/xenial,xenial,now 20.7.0-1 all [installed,automatic]
python-pyatspi/xenial,xenial,now 2.18.0+dfsg-3 all [installed,automatic]
python-samba/xenial-updates,xenial-security,now 2:4.3.11+dfsg-0ubuntu0.16.04.13 AMD64 [installed]
python-setuptools/xenial,xenial,now 20.7.0-1 all [installed,automatic]
python-talloc/xenial,now 2.1.5-2 AMD64 [installed]
python-tdb/xenial,now 1.3.8-2 AMD64 [installed]
python-wheel/xenial,xenial,now 0.29.0-1 all [installed,automatic]
python2.7/xenial-updates,now 2.7.12-1ubuntu0~16.04.3 AMD64 [installed]
python2.7-dev/xenial-updates,now 2.7.12-1ubuntu0~16.04.3 AMD64 [installed,automatic]
python2.7-minimal/xenial-updates,now 2.7.12-1ubuntu0~16.04.3 AMD64 [installed]
python3/xenial,now 3.5.1-3 AMD64 [installed]
python3-apport/xenial-updates,xenial-updates,now 2.20.1-0ubuntu2.17 all [installed]
python3-apt/xenial-updates,now 1.1.0~beta1ubuntu0.16.04.1 AMD64 [installed]
python3-aptdaemon/xenial,xenial,now 1.1.1+bzr982-0ubuntu14 all [installed]
python3-aptdaemon.gtk3widgets/xenial,xenial,now 1.1.1+bzr982-0ubuntu14 all [installed]
python3-aptdaemon.pkcompat/xenial,xenial,now 1.1.1+bzr982-0ubuntu14 all [installed]
python3-blinker/xenial,xenial,now 1.3.dfsg2-1build1 all [installed]
python3-brlapi/xenial-updates,now 5.3.1-2ubuntu2.1 AMD64 [installed]
python3-bs4/xenial,xenial,now 4.4.1-1 all [installed]
python3-cairo/xenial,now 1.10.0+dfsg-5build1 AMD64 [installed]
python3-cffi-backend/xenial,now 1.5.2-1ubuntu1 AMD64 [installed]
python3-chardet/xenial,xenial,now 2.3.0-2 all [installed]
python3-checkbox-support/xenial,xenial,now 0.22-1 all [installed]
python3-commandnotfound/xenial-updates,xenial-updates,now 0.3ubuntu16.04.2 all [installed]
python3-cryptography/xenial-updates,xenial-security,now 1.2.3-1ubuntu0.1 AMD64 [installed]
python3-cups/xenial,now 1.9.73-0ubuntu2 AMD64 [installed]
python3-cupshelpers/xenial,xenial,now 1.5.7+20160212-0ubuntu2 all [installed]
python3-dateutil/xenial,xenial,now 2.4.2-1 all [installed,automatic]
python3-dbus/xenial,now 1.2.0-3 AMD64 [installed]
python3-debian/xenial,xenial,now 0.1.27ubuntu2 all [installed]
python3-defer/xenial,xenial,now 1.0.6-2build1 all [installed]
python3-dev/xenial,now 3.5.1-3 AMD64 [installed,automatic]
python3-distupgrade/xenial-updates,xenial-updates,xenial-security,xenial-security,now 1:16.04.25 all [installed]
python3-feedparser/xenial,xenial,now 5.1.3-3build1 all [installed]
python3-gdbm/xenial,now 3.5.1-1 AMD64 [installed]
python3-gi/xenial,now 3.20.0-0ubuntu1 AMD64 [installed]
python3-gi-cairo/xenial,now 3.20.0-0ubuntu1 AMD64 [installed]
python3-guacamole/xenial,xenial,now 0.9.2-1 all [installed]
python3-html5lib/xenial,xenial,now 0.999-4 all [installed]
python3-httplib2/xenial,xenial,now 0.9.1+dfsg-1 all [installed]
python3-icu/xenial,now 1.9.2-2build1 AMD64 [installed]
python3-idna/xenial,xenial,now 2.0-3 all [installed]
python3-jinja2/xenial,xenial,now 2.8-1 all [installed]
python3-jwt/xenial-updates,xenial-updates,xenial-security,xenial-security,now 1.3.0-1ubuntu0.1 all [installed]
python3-louis/xenial-updates,xenial-updates,xenial-security,xenial-security,now 2.6.4-2ubuntu0.1 all [installed]
python3-lxml/xenial,now 3.5.0-1build1 AMD64 [installed]
python3-mako/xenial,xenial,now 1.0.3+ds1-1ubuntu1 all [installed]
python3-markupsafe/xenial,now 0.23-2build2 AMD64 [installed]
python3-minimal/xenial,now 3.5.1-3 AMD64 [installed]
python3-oauthlib/xenial,xenial,now 1.0.3-1 all [installed]
python3-padme/xenial,xenial,now 1.1.1-2 all [installed]
python3-pam/xenial,now 0.4.2-13.2ubuntu2 AMD64 [installed]
python3-pexpect/xenial,xenial,now 4.0.1-1 all [installed]
python3-pil/xenial-updates,xenial-security,now 3.1.2-0ubuntu1.1 AMD64 [installed]
python3-pip/xenial-updates,xenial-updates,now 8.1.1-2ubuntu0.4 all [installed]
python3-pkg-resources/xenial,xenial,now 20.7.0-1 all [installed]
python3-plainbox/xenial,xenial,now 0.25-1 all [installed]
python3-problem-report/xenial-updates,xenial-updates,now 2.20.1-0ubuntu2.17 all [installed]
python3-ptyprocess/xenial,xenial,now 0.5-1 all [installed]
python3-pyasn1/xenial,xenial,now 0.1.9-1 all [installed]
python3-pyatspi/xenial,xenial,now 2.18.0+dfsg-3 all [installed]
python3-pycurl/xenial,now 7.43.0-1ubuntu1 AMD64 [installed]
python3-pyparsing/xenial-updates,xenial-updates,now 2.0.3+dfsg1-1ubuntu0.1 all [installed]
python3-renderpm/xenial,now 3.3.0-1 AMD64 [installed]
python3-reportlab/xenial,xenial,now 3.3.0-1 all [installed]
python3-reportlab-accel/xenial,now 3.3.0-1 AMD64 [installed]
python3-requests/xenial,xenial,now 2.9.1-3 all [installed]
python3-setuptools/xenial,xenial,now 20.7.0-1 all [installed,automatic]
python3-six/xenial,xenial,now 1.10.0-3 all [installed]
python3-software-properties/xenial-updates,xenial-updates,now 0.96.20.7 all [installed]
python3-speechd/xenial,xenial,now 0.8.3-1ubuntu3 all [installed]
python3-systemd/xenial,now 231-2build1 AMD64 [installed]
python3-tk/xenial,now 3.5.1-1 AMD64 [installed]
python3-uno/xenial-updates,xenial-security,now 1:5.1.6~rc2-0ubuntu1~xenial3 AMD64 [installed]
python3-update-manager/xenial-updates,xenial-updates,xenial-security,xenial-security,now 1:16.04.12 all [installed]
python3-urllib3/xenial-updates,xenial-updates,now 1.13.1-2ubuntu0.16.04.1 all [installed]
python3-wheel/xenial,xenial,now 0.29.0-1 all [installed,automatic]
python3-xdg/xenial,xenial,now 0.25-4 all [installed]
python3-xkit/xenial,xenial,now 0.5.0ubuntu2 all [installed]
python3-xlsxwriter/xenial,xenial,now 0.7.3-1 all [installed]
python3.5/xenial-updates,xenial-security,now 3.5.2-2ubuntu0~16.04.4 AMD64 [installed]
python3.5-dev/xenial-updates,xenial-security,now 3.5.2-2ubuntu0~16.04.4 AMD64 [installed,automatic]
python3.5-minimal/xenial-updates,xenial-security,now 3.5.2-2ubuntu0~16.04.4 AMD64 [installed]
python3およびpython3.6バイナリ1 デフォルトの場所ではない/usr/local/binにインストールされ、dpkg（ またはAPT ）はそれらを認識しません。したがって、dpkgやAPTによってインストールされることはほとんどありませんでした。それらをアンインストールするには、/usr/local/binフォルダーから削除するだけです。
事前確認
最初に名前を変更することをお勧めします。
Sudo mv /usr/local/bin/python3 /usr/local/bin/python3.bak
Sudo mv /usr/local/bin/python3.6 /usr/local/bin/python3.6.bak
次に、python3を実行したときに、APTによってインストールされたバージョンが起動するかどうかを確認します。
python3 --version # expected output: Python 3.5.2
このチェックが成功したら、ファイル/usr/local/bin/python3.bakおよび/usr/local/bin/python3.6.bakを安全に削除できます。
1 実際、1つのファイルは他のファイルへのシンボリックリンクである場合があります。