libTerm 0.2.6

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libTerm

Quick Setup with examples:

git clone https://github.com/hoefkensj/libTerm
cd libTerm
python -m venv .venv && source .venv/bin/activate
pip install -e . 
python Examples/ex_manualsnake.py

Quick Setup for use within Your project:

pip install libTerm

⚠️ WARNING:

While No code in this project was written by an LLM (not even autocomplete). Everything below this warning was generated generated by an LLM. It was Quickly skimmed for errors and or falsehoods, corrected where needed, but I would not trust it to much.

libTerm is a lightweight Python library for low-level terminal control and interactive TUI-style programs.
It provides a clean abstraction over ANSI escape codes, POSIX terminal modes, cursor movement, input handling, colors, and terminal size — without hiding the power of the terminal.

This library is best suited for:

• Interactive CLI tools
• Terminal games (snake, roguelikes, demos)
• Live terminal dashboards
• Custom key handling (arrows, raw input)

It works primarily on POSIX systems (Linux/macOS). An implementation for windows is in progress but not usable at the moment (running it in a 3rd party terminal emulator in windows could work).

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Features

• 🖥 Terminal mode control (NORMAL / CONTROL)
• 🎯 Cursor positioning, movement, save/restore
• ⌨ Raw keyboard input & event polling
• 🎨 Terminal foreground/background color detection
• 📐 Terminal size tracking
• 🧱 Minimal abstraction — ANSI is still accessible

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Quick Start

from libTerm import Term,Coord,Mode

term = Term()
print(term.size.xy)       # Terminal size (columns, rows)
print(term.cursor.xy)     # Cursor position
print(term.color.bg)      # Background color

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Terminal Modes

libTerm exposes terminal modes through Mode.

Modes

• Mode.NORMAL – canonical input, echo on, cursor visible
• Mode.CONTROL – raw-ish input, no echo, cursor hidden

Switching Modes

from libTerm import Term, Mode

term = Term()
term.mode(Mode.CONTROL)

print("Press q to quit")
while True:
    if term.stdin.event:
        key = term.stdin.read()
        if key == 'q':
            break

term.mode(Mode.NORMAL)

⚠️ IMPORTANT: The terminal is automatically restored on exit using atexit, but you should still return to NORMAL mode explicitly when possible.

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Keyboard Input (term.stdin)

Properties & Methods

Member	Description
event	Non-blocking check for input
read()	Read buffered input as a string
buffer()	Fill internal buffer
flush()	Clear buffer
count	Number of buffered reads

Example: Arrow Keys

from libTerm import Term, Mode

term = Term()
term.mode(Mode.CONTROL)

while True:
    if term.stdin.event:
        key = term.stdin.read()
        if key == '\x1b[A':
            print("UP")
        elif key == '\x1b[B':
            print("DOWN")
        elif key == '\x1b[C':
            print("RIGHT")
        elif key == '\x1b[D':
            print("LEFT")
        elif key == 'q':
            break

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Cursor Control (term.cursor)

Cursor Properties

Property	Description
xy	Get/set cursor position (Coord)
x, y	Individual coordinates
visible	Cursor visibility state
hidden	Cursor hidden state

Cursor Movement

from libTerm import Term, Coord

term = Term()

term.cursor.xy = Coord(10, 5)
print("#")

term.cursor.move.down()
print("#")

term.cursor.move.right(5)
print("#")

term.cursor.move.abs(X=2, Y=12)
print("#")

Show / Hide Cursor

term.cursor.hide()
term.cursor.show()

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Cursor Save / Restore (Store)

The cursor maintains a position stack.

Methods

Method	Description
save()	Save current position
undo()	Restore previous position
load(n)	Load specific stored position

Example

term.cursor.save()
print("Hello")
term.cursor.undo()
print("World")

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Coordinates (Coord)

Coord is an immutable (x, y) structure.

from libTerm import Coord

c = Coord(5, 10)

print(c.x, c.y)
print(c.xy)
print(c + Coord(2, 3))

It supports:

• Indexing (c[0], c['x'])
• Addition
• Iteration

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Terminal Size (term.size)

Properties

Property	Description
xy	(columns, rows)
width	Columns
height	Rows
changed	Size changed recently
changing	Resize in progress

term = Term()
print(term.size.xy)

if term.size.changed:
    print("Terminal resized!")

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Colors (term.color)

Reads current terminal colors.

print(term.color.fg)
print(term.color.bg)
print(term.color.bg.RGB)

Color supports:

• R, G, B
• BIT depth
• .RGB tuple

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ANSI Access (Advanced)

libTerm does not hide ANSI escape sequences. You can freely mix raw ANSI with the API.

print("\x1b[31mRED\x1b[m")

Cursor movement enums are exposed:

term.cursor.move.up(2)
term.cursor.move.left(5)

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Example Use Cases

1. Interactive Input

• Custom keybinds
• Vim-like controls
• Raw arrow-key navigation

2. Terminal Games

• Snake (see Examples/)
• Roguelikes
• ASCII animations

3. Live Dashboards

• Terminal resizing detection
• Cursor-based rendering
• Zero external dependencies

4. Learning Tool

• Study ANSI sequences
• Understand terminal modes
• Experiment with POSIX I/O

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Examples Included

Located in Examples/:

File	Description
example.py	Basic usage demo
ex3.py	Raw arrow-key handling
ex_autosnake.py	Automated snake animation
ex_manualsnake.py	Keyboard-controlled snake

Run them directly:

python Examples/example.py

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Platform Notes

• ✅ Linux / macOS: Fully supported
• ⚠ Windows: Partial support (limited cursor/input features)

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Philosophy

libTerm is intentionally low-level.

It aims to:

• Stay close to ANSI & POSIX
• Avoid heavy abstractions
• Let you see and control the terminal

If you want a framework — use something else. If you want control — use libTerm.

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License

MIT License (or specify if different)

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Contributing

Pull requests welcome. Bug reports and experimental ideas encouraged.

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Happy hacking 🐍🖥