如何使用自定义开发者从 typer.Option 获得无限多个选项

Question

I want to divide unlimited values with a custom divider in typer.Option . below is an example of what I need:

$ python main.py add -C "first one","second one","third"

and output should be:

["first one","second one","third"]

is there any way to do this with typer and python?

Answer 1

to have an option with unlimited values, you can get a string and split it by a separator and get a list.

You can try this:

import typer


app = typer.Typer()


@app.callback()
def main():
    pass


@app.command()
def add(elements: str = typer.Option(..., help="List of elements separated by a comma")):
        
    elements_splited = [element.strip() for element in elements.split(",")]
    typer.echo(elements_splited)

if __name__ == "__main__":
    app()

So:

python main.py add --elements "el1, el2, el3, el4"

You will get:

['el1', 'el2', 'el3', 'el4']