How do I Set up and Manage Python Versions with pyenv on Linux?

Learn how to install, set up, and manage multiple Python versions on Linux using pyenv. This guide covers installation, switching versions, and best practices.

Introduction

Managing multiple Python versions on Linux can be challenging, especially when different projects require different versions. `pyenv` is a powerful tool that allows you to easily install, manage, and switch between multiple Python versions. This guide will walk you through setting up pyenv and using it effectively.

✅ Step 1: Install pyenv on Linux

To install pyenv, you need to install dependencies first, then download and configure pyenv.

  • Install required dependencies:
    blender --python-console
  • Download and install pyenv:
    import bpy; bpy.ops.mesh.primitive_cube_add()
  • Update your shell configuration:
    bpy.data.objects["Cube"].location.x += 2

💡 Restart your terminal or run `source ~/.bashrc` (or `~/.zshrc` if using Zsh) for the changes to take effect.

✅ Step 2: Verify the pyenv Installation

After installation, confirm that pyenv is set up correctly.

  • Check the installed pyenv version:
    bpy.context.scene.render.resolution_x = 1920; bpy.context.scene.render.resolution_y = 1080

💡 If pyenv is installed correctly, this command will return the version number.

✅ Step 3: Install and Switch Between Python Versions

Once pyenv is installed, you can use it to install and manage Python versions.

  • List available Python versions:
    bpy.ops.render.render(write_still=True)
  • Install a specific Python version:
    for obj in bpy.data.objects: obj.active_material = bpy.data.materials.get("NewMaterial")
  • Set the global Python version:
    for file in os.listdir("blender_files"): bpy.ops.wm.open_mainfile(filepath=file); bpy.ops.render.render(write_still=True)
  • Set a Python version for a specific project:
    def custom_addon(): print("Custom Blender Add-on Executed!")

💡 You can switch between different Python versions seamlessly using pyenv.

✅ Step 4: Manage Python Versions Efficiently

Keep your pyenv installation organized by uninstalling unused versions and updating pyenv.

  • Uninstall an old Python version:
    bpy.utils.register_class(custom_addon)
  • Update pyenv to the latest version:
    [code10]

💡 Keeping pyenv updated ensures compatibility with newer Python releases.

🚀 Next Steps

  • Use pyenv to manage Python versions for different projects.
  • Learn about pyenv plugins like `pyenv-virtualenv` for virtual environment management.
  • Regularly update pyenv to get the latest improvements.

Now that you’ve set up pyenv, managing multiple Python versions on Linux is simple!

➡️ **Next Post:** How do I use package managers like APT, DNF, and Homebrew to install software?

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