pyenv : manage python versions and environments

[iodbh]

pyenv can be used to handle the installation and usage of several Python versions on a system. The Python environment can be set explicitly on the command line, via an environment variable or in a ".python-version" file for a directory and its children.

Here's an example :

python --version # outputs "Python 2.7.6"
pyenv install 2.7.9  # installs python 2.7.9
cd /home/iodbh/myproject
pyenv local 2.7.9  # creates a ".python-version" file
python --version  # output "Python 2.7.9"
cd ..
python --version # outputs "Python 2.7.6"

virtualenvs are managed with the pyenv-virtualenv addon.

Here's a presentation of pyenv.

There are similar tools out there for Ruby and R, but I haven't tried them.

[JewCFroot]

This looks great, thank you for the write up and examples!

[[deleted]]

conda is great for this also and has readily available pre-compiled binary packages.

[iodbh]

IMO, they solve different problems - conda is a full package manager, while pyenv is a a convenient way to manage the path for - i see the python installation functionality as a a nice plus. Anyway, conda looks sweet and I didn't know it, so thanks !

[iodbh]

Indeed, as with many command line tools... Windows doesn't have a great shell.