$ ./basic -a 1
Successfully parsed! Here's what I got:

{ alpha: 1, file: Err(NoValue), files: [], force: False }

$ ./deploy ghcr.io/acme/api:v2 --environment production --replicas 4 --label team=payments --label tier=api --dry-run
Deployment plan:
{ dry_run: True, environment: "production", labels: ["team=payments", "tier=api"], region: "us-east-1", replicas: 4, target_image: "ghcr.io/acme/api:v2" }

$ ./default-values
Successfully parsed! Here's what I got:

{ alpha: 123, beta: 3.14, file: "NONE" }

$ ./single-arg -a 123
Successfully parsed! Here's what I got:

Alpha(123)

$ ./subcommands
Successfully parsed! Here's what I got:

{ file: Err(NoValue), files: [], force: False, sc: Err(NoSubcommand) }