polars.scan_external_reader#

polars.scan_external_reader( reader_builder: FileReaderBuilder, *, sources: str | Path | IO[bytes] | bytes | list[str] | list[Path] | list[IO[bytes]] | list[bytes], schema: Mapping[str, ForwardRef('DataTypeClass') | ForwardRef('DataType')], expand_paths: bool = False, ) → LazyFrame[source]#

Scan an external reader.

Parameters:

reader_builder: The external reader builder.
sources: The sources to scan.
schema: The schema of the data.
expand_paths: Whether to expand provided paths.

Returns:

LazyFrame: A lazy frame representing the scanned data.