Class String

python/ccxt/static_dependencies/marshmallow/fields.py:882–905

A string field. :param kwargs: The same keyword arguments that :class:`Field` receives.

class String(Field):
    """A string field.

    :param kwargs: The same keyword arguments that :class:`Field` receives.
    """

    #: Default error messages.
    default_error_messages = {
        "invalid": "Not a valid string.",
        "invalid_utf8": "Not a valid utf-8 string.",
    }

    def _serialize(self, value, attr, obj, **kwargs) -> str | None:
        if value is None:
            return None
        return utils.ensure_text_type(value)

    def _deserialize(self, value, attr, data, **kwargs) -> typing.Any:
        if not isinstance(value, (str, bytes)):
            raise self.make_error("invalid")
        try:
            return utils.ensure_text_type(value)
        except UnicodeDecodeError as error:
            raise self.make_error("invalid_utf8") from error


class UUID(String):