dicty.py 文件源码

def validate(self, obj):
        if self.key in obj:
            try:
                self.run_filters(obj)
            except ValueError as exc:
                FieldError.raise_from(exc, self.key)
            except FieldError as exc:
                exc.add_path_info(self.key)
                raise
        else:
            if not self.optional:
                raise FieldError('Is required', self.key)