dongzhuoyao · May 29, 2018 16:57
diff --git a/py3.5_ubuntu_14.04.txt b/py3.5_ubuntu_14.04.txt
 Felix Krull runs a PPA offering basically any version of Python (seriously, there is 2.3.7 build for vivid...) for many Ubuntu releases at

 https://launchpad.net/~fkrull/+archive/ubuntu/deadsnakes

 Do the usual:

 sudo add-apt-repository ppa:fkrull/deadsnakes
 sudo apt-get update
 sudo apt-get install python3.5
 It will not overwrite your existing python3.4 which is still symlinked as python3. If you want python3.5 to be the default python3, change the symlink

 cd /usr/bin
 sudo rm python3
 sudo ln -s python3.5 python3
 Actually, DON'T change the symlink! There are apparently many system functions that don't work properly with python3.5. I tried this and afterwards couldn't open a terminal, software updater,...

 The upgrade to Wily will adapt the meta-package python3 to point to python3.5. I don't expect any breakage, but at this point the foreign repository is not needed anymore. So to be really safe, you can purge the PPA before doing the upgrade.
	Felix Krull runs a PPA offering basically any version of Python (seriously, there is 2.3.7 build for vivid...) for many Ubuntu releases at

	https://launchpad.net/~fkrull/+archive/ubuntu/deadsnakes

	Do the usual:

	sudo add-apt-repository ppa:fkrull/deadsnakes
	sudo apt-get update
	sudo apt-get install python3.5
	It will not overwrite your existing python3.4 which is still symlinked as python3. If you want python3.5 to be the default python3, change the symlink

	cd /usr/bin
	sudo rm python3
	sudo ln -s python3.5 python3
	Actually, DON'T change the symlink! There are apparently many system functions that don't work properly with python3.5. I tried this and afterwards couldn't open a terminal, software updater,...

	The upgrade to Wily will adapt the meta-package python3 to point to python3.5. I don't expect any breakage, but at this point the foreign repository is not needed anymore. So to be really safe, you can purge the PPA before doing the upgrade.