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moomima
Asked: 2015-02-20 05:09:46 +0800 CST

How can I upgrade Python to 2.7.9 on Ubuntu 14.4?

  • 772

Ubuntu 14.4 comes with Python 2.7.6 built-in, but I'd like to upgrade it to 2.7.9 (it has security features that I want).

Is that even possible? If so, how can this be achieved?

python

6 Answers

  1. ppa:fkrull/deadsnakes is the latest version of python2.7

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

    It will upgrade python to 2.7.10

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  2. Best Answer

    You can use pyenv:

     git clone https://github.com/pyenv/pyenv.git ~/.pyenv
 git clone https://github.com/pyenv/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv

    Then add

       #   for PyEnv
  export PYENV_ROOT="$HOME/.pyenv"
  export PATH="$HOME/.pyenv/bin:$PATH"
  export PATH="$HOME/.pyenv/shims:$PATH"
  eval "$(pyenv init -)"

    to .bash_profile then you can see the python version you want to install or update:

    pyenv install --list

    want python 2.7.18? First you install it:

     pyenv install 2.7.18

    after which you can create a virtualenv using it:

     pyenv virtualenv 2.7.18

    Hope it can help you.

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  3. I'm not a fan of previous answers suggesting installing from various PPAs. No disrespect intended, but I don't know the people who built them and I have no idea what might be in there. In any environment where someone has to answer to a security professional that practice would be frowned upon.

    I just found that downloading 2.7.18 from source and installing it side-by-side was a good start. This awesome blog post covered the steps. (recreated here to conform to stack overflow guidelines)

    wget https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tgz
tar xfz Python-2.7.18.tgz
cd Python-2.7.18/
./configure --prefix /usr/local/lib/python2.7.18
make
make install

    Test if the version works

    /usr/local/lib/python2.7.18/bin/python -V
Python 2.7.18

    Now that I have 2.7.18 installed I can call it directly or symlink to it from wherever I want. (or copy it into a virtualenv etc.)

    And note that I got here from a situation where I was getting insecure platform warnings, and SNI Missing warnings. Which led me here. I imagine many people are finding this question through the same path. And if that's why you're here this snippet may be of use to you too

    pip install urllib3[secure]
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  4. Here is new upgraded third party repository:

    sudo add-apt-repository ppa:jonathonf/python-2.7
sudo apt-get update
sudo apt-get install python2.7
python --version
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  5. You can go to the python.org and download the .tar.gz file compile and install it. You will need the basic tools in order to compile the source code. I don't remember if the "build-essential" package will suffice but give it a try.

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  6. The version you want is already in Ubuntu, in Vivid (pre)release. If you are brave, you can mix releases and install Vivid's version of Python under Trusty. Below is a generic solution that works on some packages, I can't warranty it with Python. The chances are ~ 50/50 that it will succeed. If you however find a proper backports repository for 14.04 with your required package version, then it should be a better choice.

    1. You have '... trusty main' line in your /etc/apt/sources.list, copy it twice, changing 'trusty' to 'utopic' and 'vivid'.

    2. Run apt-get update and then apt-get -t vivid install python2.7. Review dependencies installed before proceeding. Abort upgrade when you suspect any damage to your system (deleted important packages, etc.).

    3. Remove or hash the two lines from /etc/apt/sources.list.

    Never do it on production machines. Make a backup of your OS and prepare boot media to restore it if needed. Expect problems on upgrades. You've been warned.

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