Python tasks with invoke

invoke_capture.py

import invoke
import io

@invoke.task
def ls(ctx):
    result = ctx.run("dir", hide="out")

    lines = [line.strip() for line in io.StringIO(result.stdout) if not line.startswith(" ")]
    filenames = [fn for *_, fn in [line.rsplit(" ", 1) for line in lines if line != ""]]
    print("\n".join(filenames))

invoke_tasks_basic.py

import invoke

@invoke.task
def greet(ctx, name=None):
    """Greet user."""
    if name is not None:
        print(f"Hello {name}!")
    else:
        print("Hi there!")

invoke_tasks_documenting.py

import invoke

@invoke.task(help={
    "name": "Name of the person to greet.", 
})
def greet(ctx, name=None):
    """Greet user."""
    if name is not None:
        print(f"Hello {name}!")
    else:
        print("Hi there!")