How to Install Python 3.10 Beta4 in Ubuntu 20.04, Ubuntu 18.04

January 7, 2021 — 2 Comments

The Python programming language 3.10 is now in development. For testing purpose you can install the Beta release via PPA in Ubuntu 20.04, Ubuntu 18.04, Linux Mint 19.x/20, and derivatives.

Many new features for Python 3.10 are still being planned and written. Among the new major features and changes so far:

  • Deprecate and prepare for the removal of the wstr member in PyUnicodeObject.
  • Allow writing union types as X | Y
  • Parameter Specification Variables
  • Precise line numbers for debugging and other tools.
  • Add Optional Length-Checking To zip.
  • Parenthesized context managers are now officially allowed.
  • Deprecate distutils module.
  • Explicit Type Aliases
  • Structural Pattern Matching: Specification
  • Structural Pattern Matching: Motivation and Rationale
  • Structural Pattern Matching: Tutorial
  • Require OpenSSL 1.1.1 or newer
  • Remove Py_UNICODE encoder APIs
  • Add optional EncodingWarning

Install Python 3.10 Beta 4 via PPA:

So far, it’s Python 3.10 Beta 4, which is available to install via this Ubuntu PPA. NOTE for Ubuntu 16.04, the package stuck at Python 3.10 alpha 6 due to old SSL library.

1.) Open terminal from system application menu, and run command to add the PPA:

sudo add-apt-repository ppa:deadsnakes/ppa

Type user password (no asterisk feedback) for sudo prompts and hit Enter to continue.

2.) Then refresh system package via command:

sudo apt update

3.) Finally install Python 3.10 via command:

sudo apt install python3.10

Once installed, check via python3.10 --version command or just run python3.10 to access the IDE in terminal.

Uninstall Python 3.10:

To remove the programming language, run command:

sudo apt remove --autoremove python3.10

And remove the Ubuntu PPA via Software & Updates utility under Other Software tab.

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2 responses to How to Install Python 3.10 Beta4 in Ubuntu 20.04, Ubuntu 18.04

  1. Sergio Fernandez Testa May 10, 2021 at 11:58 pm

    Is it possible to replace previous version in order to use just python3 for running a program and also using pip

    • python3 by default is a symbolic link. You can make it link to python3.10, however some apps, e.g., Gnome-Terminal, will refuse to run.

      To do so, firstly check the default python3 version via command:

      ll /usr/bin/python3

      It’s python3.8 in Ubuntu 20.04, and python3.6 (maybe, I don’t remember) in Ubuntu 18.04.

      Secondly, add the two versions as alternatives to Python3 (replace python3.8 with python3.6 for 18.04):

      sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.8 1
      sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.10 2

      You can finally run command to select which to use as python3:

      sudo update-alternatives --config python3

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