Non-identifier string for argument with kwargs

[davetapley]

I really wanted this:

@click.argument('backup.zip', type=Path)

But the . makes it an invalid identifier: Error: Missing argument 'BACKUP.ZIP'.

So I did this:

@click.argument('backup.zip', type=Path)
def restore(**kwargs):
    zip = kwargs['backup.zip']

And Guido approves:

The keys of a dict passed using **d must be strings but they don’t have to be identifiers.