code: def clean(ctx, yes):
      
      config = ctx.obj["CONFIG"]
  
      if not exists(config):
          handle_no_cache(ctx)
  
      if not yes:
          p = input("Are you sure you want to delete wily cache? [y/N]")
          if p.lower() != "y":
              exit(0)
  
      from wily.cache import clean
  
      clean(config)
docs: Clear the .wily/ folder.