ac-tools-single-file-uv-scripter

Single-File UV Scripter

Creates self-contained Python scripts with inline dependency declarations per PEP 723. Scripts execute via uv run script.py with automatic dependency resolution.

Inline Metadata Format

# /// script
# dependencies = [
#   "package-name",
#   "package>=1.0,<2.0",
# ]
# requires-python = ">=3.12"
# ///

Syntax Rules

Element	Format	Required
Open marker	# /// script	Yes
Close marker	# ///	Yes
Dependencies	TOML array, each line # prefixed	Yes (can be empty [])
Python version	requires-python = ">=3.X"	Recommended

UV-Specific Extensions

# /// script
# dependencies = ["requests"]
# requires-python = ">=3.12"
# [tool.uv]
# exclude-newer = "2024-01-15T00:00:00Z"
# ///

• exclude-newer: RFC 3339 timestamp for reproducible builds (pins to releases before date)
• index: Alternative PyPI index URL

Template

#!/usr/bin/env -S uv run
# /// script
# dependencies = [
#   "DEPENDENCY",
# ]
# requires-python = ">=3.12"
# ///
"""One-line description of script purpose."""
from __future__ import annotations

# imports here

def main() -> None:
    """Entry point."""
    pass

if __name__ == "__main__":
    main()

Commands

Action	Command
Initialize	uv init --script name.py --python 3.12
Add dep	uv add --script name.py 'pkg>=1.0'
Run	uv run name.py [args]
Make executable	chmod +x name.py then ./name.py

Shebang Options

#!/usr/bin/env -S uv run                    # Standard
#!/usr/bin/env -S uv run --quiet            # Suppress UV output
#!/usr/bin/env -S uv run --python 3.12      # Pin Python version

Common Patterns

CLI with Arguments

#!/usr/bin/env -S uv run
# /// script
# dependencies = ["typer>=0.9", "rich"]
# requires-python = ">=3.12"
# ///
import typer
app = typer.Typer()

@app.command()
def main(name: str) -> None:
    print(f"Hello {name}")

if __name__ == "__main__":
    app()