Is it possible to install another version of Python to Virtualenv

Question

I have a shared account in a web-hosting that has Python 2 4 installed  but my code is not compatible with 2 4  Is it possible to install Python 2 6 directly to Virtualenv    Note  I don  t have permission to install it in the shared server

User · Answer

First of all  Thank you DTing for awesome answer  It s pretty much perfect   For those who are suffering from not having GCC access in shared hosting  Go for ActivePython instead of normal python like Scott Stafford mentioned  Here are the commands for that   wget http   downloads activestate com ActivePython releases 2 7 13 2713 ActivePython-2 7 13 2713-linux-x86 64-glibc-2 3 6-401785 tar gz  tar -zxvf ActivePython-2 7 13 2713-linux-x86 64-glibc-2 3 6-401785 tar gz  cd ActivePython-2 7 13 2713-linux-x86 64-glibc-2 3 6-401785    install sh   It will ask you path to python directory  Enter         localpython   Just replace above as Step 1 in DTing s answer and go ahead with Step 2 after that  Please note that ActivePython package URL may change with new release  You can always get new URL from here    http   www activestate com activepython downloads  Based on URL you need to change the name of tar and cd command based on file received

User · Answer

Pre-requisites   sudo easy install virtualenv sudo pip install virtualenvwrapper  Installing virtualenv with Python2 6   You could manually download  build and install another version of Python to  usr local or another location   If it s another location other than  usr local  add it to your PATH   Reload your shell to pick up the updated PATH   From this point on  you should be able to call the following 2 python binaries from your shell python2 5 and python2 6  Create a new instance of virtualenv with python2 6  mkvirtualenv --python python2 6 yournewenv

User · Answer

Here are the options for virtualenv    virtualenv You must provide a DEST DIR Usage  virtualenv  OPTIONS  DEST DIR  Options    --version             show program s version number and exit    -h  --help            show this help message and exit    -v  --verbose         Increase verbosity    -q  --quiet           Decrease verbosity    -p PYTHON EXE  --python PYTHON EXE                         The Python interpreter to use  e g                           --python python2 5 will use the python2 5 interpreter                         to create the new environment   The default is the                         interpreter that virtualenv was installed with                           usr bin python    --clear               Clear out the non-root install and start from scratch   --no-site-packages    Don t give access to the global site-packages dir to                         the virtual environment   --unzip-setuptools    Unzip Setuptools or Distribute when installing it   --relocatable         Make an EXISTING virtualenv environment relocatable                          This fixes up scripts and makes all  pth files                         relative   --distribute          Use Distribute instead of Setuptools  Set environ                         variable VIRTUALENV USE DISTRIBUTE to make it the                         default   --prompt  PROMPT      Provides an alternative prompt prefix for this                         environment   1  What you want to do is install python to a directory that you are able to write too   You can follow the instructions here   For Python 2 7 1 Python source  mkdir   src mkdir    localpython cd   src wget http   www python org ftp python 2 7 1 Python-2 7 1 tgz tar -zxvf Python-2 7 1 tgz cd Python-2 7 1  make clean   configure --prefix  home   USER   localpython make make install   2  Install virtualenv virtualenv source  cd   src wget http   pypi python org packages source v virtualenv virtualenv-1 5 2 tar gz md5 fbcefbd8520bb64bc24a560c6019a73c tar -zxvf virtualenv-1 5 2 tar gz cd virtualenv-1 5 2     localpython bin python setup py install   3  Create a virtualenv using your local python virtualenv docs  mkdir  home   USER  virtualenvs cd  home   USER  virtualenvs    localpython bin virtualenv py2 7 --python  home   USER   localpython bin python2 7   4  Activate the environment  cd   virtualenvs py2 7 bin source   activate   5  Check   py2 7   python Python 2 7 1  r271 86832  Mar 31 2011  15 31 37    GCC 4 4 5  on linux2 Type  help    copyright    credits  or  license  for more information   gt  gt  gt  exit     py2 7   deactivate   python Python 2 6 6  r266 84292  Sep 15 2010  15 52 39    GCC 4 4 5  on linux2 Type  help    copyright    credits  or  license  for more information   gt  gt  gt

User · Answer

You may use pyenv   There are a lot of different versions anaconda  jython  pypy and so on     https   github com yyuu pyenv  Installation as simple as pyenv install 3 2 6  pyenv install --list Available versions    2 1 3   2 2 3   2 3 7   2 4   2 4 1   2 4 2   2 4 3   2 4 4   2 4 5   2 4 6   2 5   2 5 1   2 5 2   2 5 3   2 5 4   2 5 5   2 5 6   2 6 6

User · Answer

Now a days  the easiest way I found to have a more updated version of Python is to install it via conda into a conda environment     Install conda you may need a virtualenv for this   pip install conda     Installing a new Python version inside a conda environent  I m adding this answer here because no manual download is needed  conda will do that for you   Now create an environment for the Python version you want  In this example I will use 3 5 2  because it it the latest version at this time of writing  Aug 2016    conda create -n py35 python 3 5 2   Will create a environment for conda to install packages    To activate this environment I m assuming linux otherwise check the conda docs    source activate py35     Now install what you need either via pip or conda in the environemnt conda has better binary package support    conda install  lt package name gt

User · Answer

This procedure installs Python2 7 anywhere and eliminates any absolute path references within your env folder  managed by virtualenv    Even virtualenv isn t installed absolutely    Thus  theoretically  you can drop the top level directory into a tarball  distribute  and run anything configured within the tarball on a machine that doesn t have Python  or any dependencies  installed   Contact me with any questions   This is just part of an ongoing  larger project I am engineering   Now  for the drop      Set up environment folders     mkdir env   mkdir pyenv   mkdir dep  Get Python-2 7 3  and virtualenv without any form of root OS installation     cd dep   wget http   www python org ftp python 2 7 3 Python-2 7 3 tgz   wget https   raw github com pypa virtualenv master virtualenv py  Extract and install Python-2 7 3 into the pyenv dir  make clean is optional if you are doing this a 2nd  3rd  Nth time       tar -xzvf Python-2 7 3 tgz   cd Python-2 7 3   make clean     configure --prefix  path to pyenv   make  amp  amp  make install   cd          ls dep    env    pyenv  Create your virtualenv    dep virtualenv py --python  path to pyenv bin python --verbose env  Fix the symlink to python2 7 within env include     ls -l env include    cd      rm python2 7   ln -s       pyenv include python2 7 python2 7   cd         Fix the remaining python symlinks in env   You ll have to delete the symbolically linked directories and recreate them  as above   Also  here s the syntax to force in-place symbolic link creation     ls -l env lib python2 7    cd      ln -sf          pyenv lib python2 7 UserDict py UserDict py     repeat until all symbolic links are relative       cd            Test    python --version Python 2 7 1   source env bin activate  env    python --version Python 2 7 3    Aloha

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The usual approach is to download the source and build and install locally  but not directly in virtualenv   and then create a new virtualenv using that local Python install   On some systems  it may be possible to download and install a prebuilt python  rather than building from source

User · Answer

Although the question specifically describes installing 2 6  I would like to add some importants points to the excellent answers above in case someone comes across this  For the record  my case was that I was trying to install 2 7 on an ubuntu 10 04 box   First  my motivation towards the methods described in all the answers here is that installing Python from deadsnake s ppa s has been a total failure  So building a local Python is the way to go    Having tried so  I thought relying to the default installation of pip  with sudo apt-get install pip  would be adequate  This unfortunately is wrong  It turned out that I was getting all shorts of nasty issues and eventually not being able to create a virtualenv    Therefore  I highly recommend to install pip locally with wget https   raw github com pypa pip master contrib get-pip py  amp  amp  python get-pip py --user  This related question gave me this hint   Now if this doesn t work  make sure that libssl-dev for Ubuntu or openssl-dev for CentOS is installed  Install them with apt-get or yum and then re-build Python  no need to remove anything if already installed  do so on top   get-pip complains about that  you can check so by running import ssl on a py shell   Last  don t forget to declare  local bin and local python to path  check with which pip and which python

User · Answer

I have not found suitable answer  so here goes my take  which builds upon  toszter answer  but does not use system Python  and you may know  it is not always good idea to install setuptools and virtualenv at system level when dealing with many Python configurations       bin sh  mkdir python ve cd python ve  MYROOT  pwd  mkdir env pyenv dep  cd   MYROOT  dep wget https   pypi python org packages source s setuptools setuptools-15 2 tar gz md5 a9028a9794fc7ae02320d32e2d7e12ee wget https   raw github com pypa virtualenv master virtualenv py wget https   www python org ftp python 2 7 9 Python-2 7 9 tar xz xz -d Python-2 7 9 tar xz  cd   MYROOT  pyenv tar xf    dep Python-2 7 9 tar cd Python-2 7 9   configure --prefix   MYROOT  pyenv  amp  amp  make -j 4  amp  amp  make install  cd   MYROOT  pyenv  tar xzf    dep setuptools-15 2 tar gz  cd   MYROOT   pyenv bin python dep virtualenv py --no-setuptools --python   MYROOT  pyenv bin python --verbose env env bin python pyenv setuptools-15 2 setup py install env bin easy install pip  echo  virtualenv in   MYROOT  env    The trick of breaking chicken-egg problem here is to make virtualenv without setuptools first  because it otherwise fails  pip can not be found   It may be possible to install pip   wheel directly  but somehow easy install was the first thing which came to my mind  Also  the script can be improved by factoring out concrete versions   NB  Using xz in the script

User · Answer

No  but you can install an isolated Python build  such as ActivePython  under your  HOME directory   This approach is the fastest  and doesn t require you to compile Python yourself    as a bonus  you also get to use ActiveState s binary package manager

User · Answer

I m using virtualenvwrapper and don t want to modify  PATH  here s how     which python3  usr local bin python3    mkvirtualenv --python  usr local bin python3 env name

User · Answer

Full guide with pyenv If pyenv is not installed then install it with pyenv-installer    curl https   pyenv run   bash  To use any custom python version  e g  3 5 6 use the following  pyenv install 3 5 6 pyenv virtualenv 3 5 6 NAME OF YOUR ENV cd YOUR PROJECT PATH pyenv local NAME OF YOUR ENV

[python] Is it possible to install another version of Python to Virtualenv?

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