install-python3.6-on-ubuntu-16.04-LTS

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Install Python3.6 on Ubuntu 16.04 LTS

The default python version is 3.5. And if you want to use the version 3.6, it takes times to do it. You could install Python3.6 from a third-party PPA by doing the following steps.

  1. Add the python 3.6 repository

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    sudo add-apt-repository ppa:jonathonf/python-3.6

  2. Check updates and install Python3.6 via commands

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

    After this, you could find out the specified details of the python you’ve installed with the following commands

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    python3.6 -V

    The latest version should be 3.6.7 (Installation date is 2019.02.14)

  3. To make python3 use the new installed python3.6 instead of the default 3.5, run following commands

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    sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.5 1
    sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 2

    Finally switch between the two python version for python3 via command

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    sudo update-alternatives --config python3

    After selecting version 3.6

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    python3 -V

    Reference: How to Install Python 3.6.1 in Ubuntu 16.04 LTS

    Problems

    Q:
    It shows the following error pip3 command not found, but the python3-pip has been already installed.
    Solution:
    If this happens, you could reinstall pip3 via following commands

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    sudo apt-get remove python3-pip
    sudo apt-get install python3-pip

    Reference: pip3 command not found