pyenv-api 1.1.0

A simple API for pyenv

This package provides an API in the form of a wrapper around pyenv. It can be used to install, uninstall and switch Python versions.

Note: This document is based on virtualenv-api README.

Installation

The latest stable release is available on PyPi:

$ pip install pyenv-api

Please note that the distribution is named pyenv-api, yet the Python package is named pyenvapi.

Alternatively, you may fetch the latest version from git:

$ pip install git+https://github.com/ulacioh/pyenv-api.git

Usage

pyenvapi package provides a class named PyenvAPI that lets to interact, through his methods, with pyenv subcommands and options:

from pyenvapi import PyenvAPI

pyenv = PyenvAPI()

Note: if pyenv utility is not installed on your system when you will try to get a PyenvAPI instance, a NotInstalledError would be raised.

Operations

Once you have a PyenvAPI object, you can perform operations on it.

• Get a tuple of versions installed via pyenv itself:

>>> pyenv.installed
('2.7.2', '3.7.0', '3.8.0')

• Get, set and unset the global Python version:

>>> pyenv.global_version # Get
('system',)

>>> pyenv.global_version = ('3.8.0',) # Set

# You can also set more than one version as global
# or use a list:
>>> pyenv.global_version = ['2.7.2', '3.8.0']

>>> del pyenv.global_version # Unset
# This last example set the 'system' version as global.

• Get a tuple of available Python versions to install:

>>> pyenv.available
('Python versions tuple, too many versions...',)

• Install a Python version:

  Read about subprocess.Popen objects

>>> ps = pyenv.install('3.6.0')
# `install` method returns a `subprocess.Popen` object

>>> type(ps)
<class 'subprocess.Popen'>

• Uninstall a Python version:

>>> ps = pyenv.uninstall('3.6.0')
# `uninstall` method returns a tuple with
# information of the terminated child process.

>>> returncode, stdout, stderr = ps
# `returncode` - Exit status of the child process
# `stdout` - A bytes sequence of the captured stdout
# `stderr` - A bytes sequence of the captured stderr