from exporters.pipeline.base_pipeline_item import BasePipelineItem [docs]class BaseExportFormatter(BasePipelineItem): file_extension = None item_separator = '\n' def __init__(self, options, metadata=None): super(BaseExportFormatter, self).__init__(options, metadata) [docs] def format(self, item): raise NotImplementedError [docs] def format_header(self): return '' [docs] def format_footer(self): return ''