CharacterReplacer

Converter

DashAI.back.converters.simple_converters.CharacterReplacer

Replace or remove a character or substring in all selected text columns.

Scans each value in the configured string columns and substitutes every occurrence of char_to_replace with replacement_char. If the replacement produces a column of pure integers, the column type is promoted to Integer.

Parameters

char_to_replace : string, default=: The character or substring to be replaced. Cannot be empty.
replacement_char, default=None: The character or substring to replace with. If null, 'char_to_replace' will be removed.

Methods

changes_row_count(self) -> bool

Defined on CharacterReplacer

Return False because this converter never adds or removes rows.

Returns

bool: Always False.

fit(self, x: 'DashAIDataset', y: Optional[ForwardRef('DashAIDataset')] = None) -> 'CharacterReplacer'

Defined on CharacterReplacer

Identify which columns in x are of Text type.

Parameters

x : DashAIDataset: The dataset whose columns will be inspected.
y : DashAIDataset, optional: Ignored. Defaults to None.

Returns

CharacterReplacer: The fitted converter instance (self).

get_output_type(self, column_name: str = None) -> DashAI.back.types.dashai_data_type.DashAIDataType

Defined on CharacterReplacer

Return the default output type for a transformed column.

Parameters

column_name : str, optional: Not used. Defaults to None.

Returns

DashAIDataType: A Text type backed by pyarrow.string().

transform(self, x: 'DashAIDataset', y: Optional[ForwardRef('DashAIDataset')] = None) -> 'DashAIDataset'

Defined on CharacterReplacer

Apply the character replacement to the fitted text columns.

Parameters

x : DashAIDataset: The dataset to transform.
y : DashAIDataset, optional: Ignored. Defaults to None.

Returns

DashAIDataset: A new dataset with char_to_replace substituted in all text columns. If replacement yields only integer-like values, the column type is promoted to Integer.

get_metadata(cls) -> 'Dict[str, Any]'

Defined on BaseConverter

Get metadata for the converter, used by the DashAI frontend.

Parameters

cls : type: The converter class (injected automatically by Python for classmethods).

Returns

Dict[str, Any]: Dictionary containing display name, short description, image preview path, category, icon, color, and whether the converter is supervised.

get_schema(cls) -> dict

Defined on ConfigObject

Generates the component related Json Schema.

Returns

dict: Dictionary representing the Json Schema of the component.

validate_and_transform(self, raw_data: dict) -> dict

Defined on ConfigObject

It takes the data given by the user to initialize the model and returns it with all the objects that the model needs to work.

Parameters

raw_data : dict: A dictionary with the data provided by the user to initialize the model.

Returns

dict: A validated dictionary with the necessary objects.

Parameters​

Methods​

Parameters

Methods