snsr

A playful Python-based "screensaver" that randomly moves your mouse and simulates key presses to keep your screen active.

Features

• Moves the mouse to random screen positions.
• Simulates random key presses.
• Keeps your system from going idle (uses wakepy when available).
• Auto-selects an input backend per platform (pynput on Linux, pyautogui elsewhere) with fallback.

Usage

Using uv

uvx snsr

snsr auto-detects your platform/session and picks the best backend (Linux defaults to the pynput backend; macOS and Windows use pyautogui), with fallback if the preferred backend fails to start.

Using pip

pip install snsr
snsr

It will:

• Move your mouse to random points (or jiggle relative on Linux)
• Press a random key (default set: a, s, d, f, j, k, l)
• Repeat every few seconds

Options

snsr [--interval LOW HIGH] [--keys CHARS] [--backend {auto,pyautogui,pynput}]
     [--no-failsafe] [--dry-run] [-v]

• --interval LOW HIGH — random sleep range in seconds between actions (default 1 5).
• --keys CHARS — string of single-character keys to choose from (default asdfjkl).
• --backend — force a specific backend, or leave on auto.
• --no-failsafe — disable pyautogui's corner-abort failsafe (off by default — moving the mouse to a screen corner aborts).
• --dry-run — log what would happen without actually moving the mouse or pressing keys.
• -v, --verbose — debug logging.

Logs are written to a per-platform user state directory (e.g. ~/.local/state/snsr/snsr.log on Linux, %LOCALAPPDATA%\snsr\snsr.log on Windows, ~/Library/Logs/snsr/snsr.log on macOS).

To Stop

Press Ctrl+C in the terminal to exit. By default the pyautogui backend also lets you abort by slamming the mouse into a screen corner.

Notes

• Ensure your OS allows simulated input events from Python scripts.
• Useful for keeping your machine awake during long tasks (e.g., rendering, builds, meetings).

Disclaimer

This project is intended for educational or personal use only. Use responsibly and respect your organization's policies regarding input automation.

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MIT License © 2025