code: def parse(self, data):
          '''Parse fields and store individual errors'''
          self.field_errors = {}
          return dict(
              (k, self._parse_value(k, v)) for k, v in data.items()
          f parse(self, data):
          '''Parse fields and store individual errors'''
          self.field_errors = {}
          return dict(
              (k, self._parse_value(k, v)) for k, v in data.items()
          )
docs: Parse fields and store individual errors