Ducktools: PyTUI

A terminal based user interface for managing Python installs and virtual environments.

Usage

The easiest way to install ducktools.pytui is as a tool from PyPI using uv or pipx.

uv tool install ducktools-pytui or pipx install ducktools-pytui

Run with pytui or ducktools-pytui.

There is also now a zipapp available on the releases page and should be usable as long as you have Python 3.10 or newer.

Screenshots

Managing virtual environments

Installing new runtimes

Listing packages installed in a virtual environment (3.9+ only)

Features

• List Python Virtual Environments relative to the current folder alongside those installed in a configurable global folder
• List Python Runtimes discovered by ducktools-pythonfinder
• Launch a Terminal with a selected venv activated
  • Currently only fish, bash (and git bash on Windows), zsh, powershell and cmd are supported
    • zsh and cmd only have basic support
  • Use exit to close the shell and return to PyTUI
• Launch a REPL with the selected venv
• Launch a REPL with the selected runtime
• List installed packages in a venv (Python 3.9 or later)
• Create a venv from a specific runtime in the working directory or a global folder (Python 3.4 or later)
• Delete a selected venv
• Install a runtime (Requires either the Windows Python Manager or UV to be available)
• Uninstall a runtime (Only those managed by the Windows Python Manager or UV)

Basic Configuration

Some configuration is available by editing the config.json file located here:

• Windows: %LOCALAPPDATA%\ducktools\pytui\config.json
• Non-Windows: ~/.config/ducktools/pytui/config.json

Config can be seen and edited from the commandline with the config subcommand.

Some example commands:

• pytui config - Shows the location of the config file and its current state
• pytui config -h - Shows the options for modifying the config file
• pytui config --exclude-pip - Prevent pip from being included

Config Values

• venv_search_mode - Where to search for VEnv folders
  • "cwd" - Search in the working directory only
  • "parents" - Search in the working directory and each parent folder (default)
  • "recursive" - Search in the working directory and subfolders recursively
  • "recursive_parents" - Combine the "recursive" and "parents" options (only the CWD is recursively searched)
• include_pip - Whether to include pip (and setuptools where appropriate) in created VEnvs (default: True)
• latest_pip - Download the latest pip for Python versions where it is available (default: True)
• global_venv_folder - The folder to use for global pytui venvs, ~/.local/share/ducktools/pytui/venvs by default
• shell_path - Path to the shell used to launch activated venvs

Clearing the discovered Python install cache

The Python install discovery cache is handled by the ducktools-pythonfinder package.

The easiest way to clear the cache is to use the ducktools-pythonfinder commandline.

• With uv: uvx ducktools-pythonfinder clear-cache
• With pipx: pipx run ducktools-pythonfinder clear-cache
• With the pythonfinder zipapp: python pythonfinder.pyz clear-cache

Shell Discovery

By default PyTUI will check your $SHELL variable if it is set for the path to your default shell. If this exists and is a supported shell it will be used. Otherwise it will search PATH for shells in this order:

• Windows: pwsh.exe, powershell.exe, cmd.exe, bash.exe
• Non-Windows: fish, bash, zsh

On Windows as a last resort if none of these are found it will search for the COMSPEC environment variable to find a path to cmd.exe.

A data folder of shell scripts is kept in this location:

• Windows: `%LOCALAPPDATA%\ducktools\pytui\shell_scripts
• Non-Windows: ~/.local/share/ducktools/pytui/shell_scripts

Possible Extras

• Support other common shells
• Highlight broken venvs where the base install no longer exists

Not Planned

• Handle PEP-723 inline scripts
  • ducktools-env is my project for managing these
  • Potentially that could gain a TUI, but I'm not sure I'd want to merge the two things
• Handle Conda environments
  • Conda environments are a completely separate ecosystem, while everything this supports uses the standard PyPI ecosystem
  • Supporting Conda would basically require a whole separate parallel set of commands
• Manage ducktools-pytui specific runtimes
  • I don't want to add yet another place Python can be installed
  • ducktools-pytui is intended to help manage the chaos of Python runtime installs and environments, not add a new dimension to it