code: def cli(ctx, dname, site, delete_code, no_prompt):
      
      assert isinstance(ctx, Context)
  
      # Get the domain
      dname = domain_parse(dname)
      domain = Domain.get(dname)
      if not domain:
          click.secho('No such domain: {dn}'.format(dn=domain.name), fg='red', bold=True, err=True)
          return
  
      domain_sites = {site.name.lower(): site for site in domain.sites}
  
      # Single site?
      if site:
          if site.lower() not in domain_sites:
              click.secho('No such site "{sn}" under the domain {dn}'.format(sn=site, dn=domain.name))
          site = domain_sites[site.lower()]
  
          delete_single(site, domain, delete_code, no_prompt)
          return
  
      # Delete the entire domain
      delete_all(domain, delete_code, no_prompt)
docs: Deletes a single site if both <domain> and <site> are specified, or ALL sites under a domain if only the <domain>
      is specified.