But with some software (among which is Python) the situation is somewhat different.
Some major, very- and incompatibly-different versions get packages.
You can import the release manager public keys by either downloading the public key file from here and then running On the version-specific download pages, you should see a link to both the downloadable file and a detached signature file.
You can also install a major release over a minor release without keeping it, just make sure your path variable is pointing to the right thing.
This guide is targeted at non-graphical ubuntu servers and works great as far as I’ve tested.
As a result, the 3.x version can’t be depended on to run 2.x scripts.
Secondly, if you want to use a specific third party package or utility that doesn’t yet have a released version that is compatible with Python 3, and porting that package is a non-trivial task, you may choose to use Python 2.7 in order to retain access to that package.
Alternatively, if you’re a newbie to the language and/or your class instructor insists that you begin by learning 3.x, then you’ll need to install it on your Mac.
His key id EA5BBD71 was used to sign all other Python 2.6 and 3.0 releases.
His key id ED9D77D5 is a v3 key and was used to sign older releases; because it is an old MD5 key and rejected by more recent implementations, ED9D77D5 is no longer included in the public key file.That means everything from 10.6 Snow Leopard up to and including 10.13 Sierra.)When you double-click this file, it will launch the package’s installer, and you’ll see this: There are several steps.