pandera.api.pandas.container.DataFrameSchema.to_json¶ DataFrameSchema.to_json(target: None = None, **kwargs) → str[source]¶ DataFrameSchema.to_json(target: PathLike, **kwargs) → None Write DataFrameSchema to json file. Parameters: target (Optional[PathLike]) – file target to write to. If None, dumps to string. Return type: Optional[str] Returns: json string if target is None, otherwise returns None.