Installing PyReason

This guide details the process of installing Pyreason in an isolated environment using pyenv and pip. It is particularly useful when managing projects that require different versions of Python.

Prerequisites

• Familiarity with terminal or command prompt commands.

• Basic knowledge of Python and its package ecosystem.

Note

Use python version 3.9 or 3.10 .

Step-by-Step Guide

1. Install pyenv - Ensure your system has the necessary dependencies installed. The installation steps vary by operating system:

• Linux/Unix/macOS

brew update brew install pyenv
sudo apt-get update sudo apt-get install make build-essential libssl-dev zlib1g-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libffi-dev liblzma-dev python-openssl
git curl -L  https://github.com/pyenv/pyenv-installer/raw/master/bin/pyenv-installer \| bash

2. Configure Environment Variables

   • Add pyenv to your profile script to automatically use it in your shell

   • For bash users:

   echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.bash_profile
   echo 'eval "$(pyenv init --path)"' >> ~/.bash_profile
   echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.bash_profile
   

   • For zsh users:

   echo 'export PATH="$HOME/.pyenv/bin:$PATH"' >> ~/.zshrc
   echo 'eval "$(pyenv init --path)"' >> ~/.zshrc
   echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.zshrc``
   

   • Restart your shell so the path changes take effect.

3. Install Python using pyenv

pyenv install 3.8

4. Create a Virtual Environment

pyenv virtualenv 3.8 pyreason_venv_3.8

5. Activate the Virtual Environment

pyenv activate pyreason_venv_3.8

6. Install pyreason Using pip

pip install pyreason

7. Install requirements.txt

pip install -r requirements.txt

8. Deactivate the Virtual Environment

pyenv deactivate