docs: def get_primitive_name(schema):
      """ Get a human-friendly name for the given primitive.
  
      :param schema: Schema
      :type schema: *
      :rtype: unicode
      """
      try:
          return {
              const.COMPILED_TYPE.LITERAL: six.text_type,
              const.COMPILED_TYPE.TYPE: get_type_name,
              const.COMPILED_TYPE.ENUM: get_type_name,
              const.COMPILED_TYPE.CALLABLE: get_callable_name,
              const.COMPILED_TYPE.ITERABLE: lambda x: _(u'{type}[{content}]').format(type=get_type_name(list), content=_(u'...') if x else _(u'-')),
              const.COMPILED_TYPE.MAPPING:  lambda x: _(u'{type}[{content}]').format(type=get_type_name(dict), content=_(u'...') if x else _(u'-')),
          }[primitive_type(schema)](schema)
      except KeyError:
          return six.text_type(repr(schema))