# CSVSaver **`class CSVSaver(config)`** Bases: [`Saver`](squirro.lib.nlp.steps.savers.Saver.md#squirro.lib.nlp.steps.savers.Saver) Saves all [`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document) to a specified output_file in CSV format Parameters - `type` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – csv - `output_file` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – path to output CSV file (relative to ml workflow path) **Example** ```json { "step": "saver", "type": "csv", "fields": [ "text", "prediction" ], "output_file": "data.csv" } ``` Methods SummaryMethods Documentation **`process_batch(batch)`** Process a batch of documents. If not defined will default to using self.process_doc for each document in the batch. Parameters `batch` ([`list`](https://docs.python.org/3.11/library/stdtypes.html#list)`(`[`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document)`)`) – List of documents Returns List of processed documents Return type [list](https://docs.python.org/3.11/library/stdtypes.html#list)([Document](../technical/libnlp/base.md#squirro.lib.nlp.document.Document))