Python Setup

Python Setup

Table of Contents:

  1. Pyenv
    1. Installing Pyenv
    2. Installing Pyenv with Debian
  2. Poetry
    1. Poetry Installation

Pyenv

Tool used to manage multiple versions of python installed on a system to easily switch between python versions.

Installing Pyenv

Using zsh shell instead of bash.

Add to ~/.zshrc and ~/.zprofile:

# Add pyenv executable to PATH and
# enable shims by adding the following
# to ~/.profile and ~/.zprofile:

export PYENV_ROOT="$HOME/.pyenv"
export PATH="$PYENV_ROOT/bin:$PATH"
export PATH="$HOME/.local/bin:$PATH"
eval "$(pyenv init --path)"
eval "$(pyenv init -)"

To allow switching in local shell adding the above to ~/.zprofie should allow for in terminal switch.

Installing Pyenv with Debian

Debian Installation

To install new python versions using pyenv, there are a few dependencies that may be required to avoid errors during compiling from the source:

$ sudo apt-get update; sudo apt-get install make build-essential libssl-dev zlib1g-dev \
libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm \
libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev

Poetry

Poetry is a tool for dependency management and packaging in Python. It allows you to declare the libraries your project depends on and it will manage (install/update) them for you. Poetry offers a lockfile to ensure repeatable installs, and can build your project for distribution. Ref: Poetry Docs

Poetry Installation 

curl -sSL https://install.python-poetry.org | python -

If using oh-my-zsh:

mkdir $ZSH_CUSTOM/plugins/poetry
poetry completions zsh > $ZSH_CUSTOM/plugins/poetry/_poetry

When working on a project you can use:

poetry config virtualenvs.in-project true

This will set up a virtual environment in your local project, just be sure to add to your .gitignore to prevent sync with your svn.