- 14.04 есть Python 2.
- Вы не можете удалить Python 2, не удалив все пакеты, которые зависят от Python 2. Это, вероятно, более 50%.
Посмотрите на этот список:
The following packages were automatically installed and are no longer required:
accountsservice-ubuntu-schemas accountsservice-ubuntu-touch-schemas
gnome-control-center-data gnome-settings-daemon
gsettings-ubuntu-touch-schemas indicator-network libappindicator1
libbit-vector-perl libbonobo2-0 libbonobo2-common libbonoboui2-common
libcarp-clan-perl libclass-data-inheritable-perl
libclass-method-modifiers-perl libcommon-sense-perl
libcrypt-openssl-bignum-perl libcrypt-openssl-rsa-perl libdata-random-perl
libdate-calc-perl libdate-calc-xs-perl libextutils-depends-perl
libextutils-pkgconfig-perl libfile-which-perl libgd-perl libglade2-0
libgnome2-canvas-perl libgnome2-gconf-perl libgnome2-wnck-perl
libgnomecanvas2-0 libgnomecanvas2-common libgnomeui-common
libgoa-backend-1.0-1 libgoo-canvas-perl libgoocanvas-common libgoocanvas3
libgtk2-appindicator-perl libgtk2-imageview-perl libgtk2-unique-perl
libgtkimageview0 libhttp-server-simple-perl libidl-common libidl0
libindicator7 libjson-perl libjson-xs-perl libkeybinder0 libmouse-perl
libnet-dbus-perl libnet-dropbox-api-perl libnet-oauth-perl libofono-qt1
libonline-accounts-client1 liborbit-2-0 liborbit2 libpath-class-perl
libproc-processtable-perl libproc-simple-perl libqgsttools-p1
libqt5multimedia5-plugins libqt5multimediaquick-p5 libqt5multimediawidgets5
libqt5systeminfo5 libsort-naturally-perl libsystemsettings1
libtie-ixhash-perl libubuntu-download-manager-client0
libubuntu-download-manager-common0 libubuntu-download-manager-priv0
libubuntuoneauth-2.0-0 libunique-1.0-0 libwww-mechanize-perl
libx11-protocol-perl libxml-twig-perl libxml-xpathengine-perl
linux-headers-3.13.0-18 linux-headers-3.13.0-18-generic
linux-image-3.13.0-18-generic linux-image-extra-3.13.0-18-generic
packagekit-tools perlmagick python3-gnupg
qtdeclarative5-folderlistmodel-plugin qtdeclarative5-qtmultimedia-plugin
qtdeclarative5-systeminfo-plugin qtdeclarative5-ubuntuone1.0 suru-icon-theme
system-image-common system-image-dbus ubuntu-download-manager
ubuntu-keyboard-data ubuntu-mobile-icons ubuntu-purchase-service
ubuntu-touch-sounds ubuntuone-credentials-common
...
The following packages will be REMOVED:
aisleriot apt-xapian-index apturl checkbox-gui compiz compiz-gnome
compizconfig-settings-manager deja-dup deja-dup-backend-gvfs
deja-dup-backend-ubuntuone duplicity flashplugin-installer gconf2 gedit
gnome-terminal gnome-terminal-data gnome-user-share gvfs-backends hplip
hplip-data ibus ibus-pinyin ibus-table indicator-bluetooth
landscape-client-ui-install libbonoboui2-0 libgnome2-0 libgnome2-bin
libgnome2-common libgnome2-perl libgnome2-vfs-perl libgnomeui-0
libgnomevfs2-0 libgnomevfs2-common libgnomevfs2-extra libpurple-bin
libreoffice-gnome libsmbclient nautilus-share oneconf oneconf-common
plainbox-provider-checkbox printer-driver-postscript-hp
printer-driver-sag-gdi pybootchartgui python python-apt python-aptdaemon
python-aptdaemon.gtk3widgets python-cairo python-chardet python-colorama
python-commandnotfound python-compizconfig python-configglue python-crypto
python-cssselect python-cups python-cupshelpers python-dbus python-debian
python-debtagshw python-defer python-dirspec python-distlib python-gconf
python-gdbm python-gi python-gi-cairo python-glade2 python-gnomekeyring
python-gobject python-gobject-2 python-gtk2 python-html5lib python-httplib2
python-ibus python-imaging python-keybinder python-ldb python-libxml2
python-lockfile python-lxml python-notify python-ntdb python-oauthlib
python-oneconf python-openssl python-pam python-pexpect python-pil
python-pip python-piston-mini-client python-pkg-resources python-protobuf
python-pycurl python-pyinotify python-pyquery python-qt4 python-qt4-dbus
python-renderpm python-reportlab python-reportlab-accel python-requests
python-samba python-serial python-setuptools python-sip python-six
python-smbc python-support python-talloc python-tdb python-twisted-bin
python-twisted-core python-twisted-names python-twisted-web
python-ubuntu-sso-client python-ubuntuone-client
python-ubuntuone-control-panel python-ubuntuone-storageprotocol
python-urllib3 python-webob python-xapian python-xdg python-zeitgeist
python-zope.interface python3-oneconf rhythmbox rhythmbox-mozilla
rhythmbox-plugin-cdrecorder rhythmbox-plugin-magnatune
rhythmbox-plugin-zeitgeist rhythmbox-plugins rhythmbox-ubuntuone
samba-common-bin samba-libs sessioninstaller shutter smbclient
software-center software-center-aptdaemon-plugins streamtuner2
system-config-printer-common system-config-printer-gnome
system-config-printer-udev totem totem-mozilla totem-plugins
transmission-gtk ubuntu-desktop ubuntu-release-upgrader-gtk
ubuntu-sso-client ubuntu-sso-client-qt ubuntu-system-service
ubuntuone-client ubuntuone-control-panel unity unity-control-center
unity-control-center-signon unity-tweak-tool unity-webapps-common
update-manager update-notifier update-notifier-common
webaccounts-extension-common xdiagnose xul-ext-webaccounts zeitgeist
...
0 upgraded, 71 newly installed, 169 to remove and 4 not upgraded.
Допустим, вы удалите python2.7. Это восстановит рабочий стол:
sudo apt-get update
sudo apt-get install --reinstall ubuntu-desktop