python version maagement with pyenv

python-version-management-with-pyenv.md

Python version management with pyenv

Information

  pyenv help
  pyenv version
  pyenv versions
  pyenv version-origin

Switching versions

There are several ways to switch. These are list in order of descending precedence:

• For a shell amend PYENV_VERSION using pyenv shell

  pyenv shell 3.8.10

• For an app, add a .python-version to the root and put the version or virtual env name or python version number that you are wanting to use.

• For global settings use the root .python-version file

  vim $(pyenv root)/version
  

  • add list of version numbers
  • put the version you want at the top
  • note: you can have multiple active but only the top one will take effect

  # example .python-version file
  3.9.7
  3.8.10
  3.7.7
  3.6.5
  2.7.15
  

Installing new python versions

• use pyenv install <version-number>

pyenv install 3.9.7

• switch to that version using one of the methods above

pyenv shell 3.9.7

Virtualenv management with pyenv-virtualenv and pyenv

see pyenv-virtualenv for more

Information

pyenv virtualenvs

Create a new virtualenv

# create a named virtualenv for current python version
pyenv virtualenv my-virtual-env

# create a named virtualenv for specific python version
pyenv virtualenv 3.9.7 my-virtual-env-3.9.7

Activate/deactivate a virtualenv

pyenv activate my-virtual-env-3.9.7
pyenv deactivate

Delete virtualenv

pyenv uninstall my-virtual-env
# or
pyenv virtualenv-delete my-virtual-en