code: def does_not_contain_value(self, *values):
          
          self._check_dict_like(self.val, check_getitem=False)
          if len(values) == 0:
              raise ValueError('one or more value args must be given')
          else:
              found = []
              for v in values:
                  if v in self.val.values():
                      found.append(v)
              if found:
                  self._err('Expected <%s> to not contain values %s, but did contain %s.' % (self.val, self._fmt_items(values), self._fmt_items(found)))
          return self
docs: Asserts that val is a dict and does not contain the given value or values.