Python 3.6.6 to Ubuntu 16.04.1?

Question

I'm using Ubuntu 16.04.1. I ran this commands:

sudo apt-get update
sudo apt-get install python3.6

I upgraded my Python 3.6 from 3.6.2 to 3.6.5 But Python 3.6.6 is available since 2018-06-27 How can I install it? Does it make sense that such an important package is not in the repository?

This important to me because 3.6.6 fixed a bug which I encounter in my code.

Running apt-cache policy python3.6 Gives:

python3.6:
  Installed: 3.6.5-5~16.04.york1
  Candidate: 3.6.5-5~16.04.york1
  Version table:
 *** 3.6.5-5~16.04.york1 500
        500 http://ppa.launchpad.net/jonathonf/python-3.6/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status

I also get :

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
    from apport.fileutils import likely_packaged, get_recent_crashes
  File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
    from apport.report import Report
  File "/usr/lib/python3/dist-packages/apport/report.py", line 30, in <module>
    import apport.fileutils
  File "/usr/lib/python3/dist-packages/apport/fileutils.py", line 23, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 23, in <module>
    import apt
  File "/usr/lib/python3/dist-packages/apt/__init__.py", line 23, in <module>
    import apt_pkg
ModuleNotFoundError: No module named 'apt_pkg'

When running script using python3.6

Note: I have python which associate to python2.7, python3 which associate to python3.5 and now I'm adding python3.6 - I don't want to overwrite other python installations.

Answer 1

The jonathonf PPA you are using has not included Python 3.6.6 yet. However, there is the deadsnakes PPA which is the de-facto standard for installing non-default Python versions on Ubuntu.

Run the following commands to start using the deadsnakes PPA:

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update

You should be able to install Python 3.6.6 on your Ubuntu 16.04 after that.

Optionally remove the PPA “jonathonf” from your machine but this should not be necessary.

Note: I have python which associate to python2.7, python3 which associate to python3.5 and now I'm adding python3.6 - I don't want to overwrite other python installations.

The links python and python3 are system default. A new version added using a PPA should not alter these links, so they will still behave as the system expects. The Python version installed from the PPA should be available as python3.6.

But according to what I see they both go to /usr/lib/python3/dist-packages/.

These files are installed by the deadsnakes PPA:

$ dpkg -L python3.6
/.
/usr
/usr/lib
/usr/lib/python3.6
/usr/lib/python3.6/lib-dynload
/usr/lib/python3
/usr/lib/python3/dist-packages
/usr/lib/python3/dist-packages/README.txt
/usr/bin
/usr/bin/2to3-3.6
/usr/bin/pydoc3.6
/usr/bin/pygettext3.6
/usr/share
/usr/share/lintian
/usr/share/lintian/overrides
/usr/share/lintian/overrides/python3.6
/usr/share/doc
/usr/share/doc/python3.6
/usr/share/doc/python3.6/NEWS.gz
/usr/share/doc/python3.6/README.rst.gz
/usr/share/doc/python3.6/ACKS.gz
/usr/share/doc/python3.6/README.Debian
/usr/share/doc/python3.6/copyright
/usr/share/doc/python3.6/changelog.Debian.gz
/usr/share/applications
/usr/share/applications/python3.6.desktop
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/2to3-3.6.1.gz
/usr/share/man/man1/pydoc3.6.1.gz
/usr/share/man/man1/pysetup3.6.1.gz
/usr/share/man/man1/pdb3.6.1.gz
/usr/share/man/man1/pygettext3.6.1.gz
/usr/share/pixmaps
/usr/share/pixmaps/python3.6.xpm
/usr/bin/pdb3.6
/usr/share/doc/python3.6/changelog.gz

The only thing going to the /usr/lib/python3/dist-packages directory is the README.txt file. It won’t overwrite current contents.