base.py 文件源码

def get_step_files(self, step):
        wizard_files = self.data[self.step_files_key].get(step, {})

        if wizard_files and not self.file_storage:
            raise NoFileStorageConfigured(
                    "You need to define 'file_storage' in your "
                    "wizard view in order to handle file uploads.")

        files = {}
        for field, field_dict in six.iteritems(wizard_files):
            field_dict = field_dict.copy()
            tmp_name = field_dict.pop('tmp_name')
            files[field] = UploadedFile(
                file=self.file_storage.open(tmp_name), **field_dict)
        return files or None