code: def render_profile(cls, raw_profile, profile_name, target_override,
                         cli_vars):
          
          renderer = ConfigRenderer(cli_vars=cli_vars)
  
          # rendering profiles is a bit complex. Two constraints cause trouble:
          # 1) users should be able to use environment/cli variables to specify
          #    the target in their profile.
          # 2) Missing environment/cli variables in profiles/targets that don't
          #    end up getting selected should not cause errors.
          # so first we'll just render the target name, then we use that rendered
          # name to extract a profile that we can render.
          if target_override is not None:
              target_name = target_override
          elif 'target' in raw_profile:
              # render the target if it was parsed from yaml
              target_name = renderer.render_value(raw_profile['target'])
          else:
              target_name = 'default'
              logger.debug(
                  "target not specified in profile '{}', using '{}'"
                  .format(profile_name, target_name)
              )
  
          raw_profile_data = cls._get_profile_data(
              raw_profile, profile_name, target_name
          )
  
          profile_data = renderer.render_profile_data(raw_profile_data)
          return target_name, profile_data
docs: This is a containment zone for the hateful way we're rendering
          profiles.