def to_picard_basecalling_params(<EOL>self,<EOL>directory: Union[str, Path],<EOL>bam_prefix: Union[str, Path],<EOL>lanes: Union[int, List[int]],<EOL>) -> None:
if len(self.samples) == <NUM_LIT:0>:<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>if not (<EOL>isinstance(lanes, int)<EOL>or isinstance(lanes, (list, tuple))<EOL>and len(lanes) > <NUM_LIT:0><EOL>and all(isinstance(lane, int) for lane in lanes)<EOL>):<EOL><INDENT>raise ValueError(f'<STR_LIT>')<EOL><DEDENT>if len(set(len(sample.index or '<STR_LIT>') for sample in self.samples)) != <NUM_LIT:1>:<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>if len(set(len(sample.index2 or '<STR_LIT>') for sample in self.samples)) != <NUM_LIT:1>:<EOL><INDENT>raise ValueError('<STR_LIT>')<EOL><DEDENT>for attr in ('<STR_LIT>', '<STR_LIT>', '<STR_LIT:index>'):<EOL><INDENT>if any(getattr(sample, attr) is None for sample in self.samples):<EOL><INDENT>raise ValueError(<EOL>'<STR_LIT>'<EOL>'<STR_LIT>'<EOL>)<EOL><DEDENT><DEDENT>lanes = [lanes] if isinstance(lanes, int) else lanes<EOL>prefix = Path(directory).expanduser().resolve()<EOL>prefix.mkdir(exist_ok=True, parents=True)<EOL>bam_prefix = Path(bam_prefix).expanduser().resolve()<EOL>barcode_header = [<EOL>*(<EOL>['<STR_LIT>']<EOL>if not self.samples_have_index2<EOL>else ['<STR_LIT>', '<STR_LIT>']<EOL>),<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>]<EOL>library_header = [<EOL>*(<EOL>['<STR_LIT>']<EOL>if not self.samples_have_index2<EOL>else ['<STR_LIT>', '<STR_LIT>']<EOL>),<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>]<EOL>for lane in lanes:<EOL><INDENT>barcode_out = prefix / f'<STR_LIT>'<EOL>library_out = prefix / f'<STR_LIT>'<EOL>with ExitStack() as stack:<EOL><INDENT>barcode_writer = csv.writer(<EOL>stack.enter_context(barcode_out.open('<STR_LIT:w>')), delimiter='<STR_LIT:\t>'<EOL>)<EOL>library_writer = csv.writer(<EOL>stack.enter_context(library_out.open('<STR_LIT:w>')), delimiter='<STR_LIT:\t>'<EOL>)<EOL>barcode_writer.writerow(barcode_header)<EOL>library_writer.writerow(library_header)<EOL>for sample in self.samples:<EOL><INDENT>long_name = '<STR_LIT:.>'.join(<EOL>[sample.Sample_Name, sample.Library_ID]<EOL>)<EOL>barcode_name = sample.index + (sample.index2 or '<STR_LIT>')<EOL>library_name = sample.Library_ID or '<STR_LIT>'<EOL>bam_file = (<EOL>bam_prefix<EOL>/ long_name<EOL>/ f'<STR_LIT>'<EOL>)<EOL>barcode_line = [<EOL>*(<EOL>[sample.index]<EOL>if not self.samples_have_index2<EOL>else [sample.index, sample.index2]<EOL>),<EOL>barcode_name,<EOL>library_name,<EOL>]<EOL>library_line = [<EOL>*(<EOL>[sample.index]<EOL>if not self.samples_have_index2<EOL>else [sample.index, sample.index2]<EOL>),<EOL>bam_file,<EOL>sample.Sample_Name,<EOL>sample.Library_ID,<EOL>sample.Description or '<STR_LIT>',<EOL>]<EOL>barcode_writer.writerow(map(str, barcode_line))<EOL>library_writer.writerow(map(str, library_line))<EOL><DEDENT>unmatched_file = bam_prefix / f'<STR_LIT>'<EOL>library_line = [<EOL>*(['<STR_LIT:N>'] if not self.samples_have_index2 else ['<STR_LIT:N>', '<STR_LIT:N>']),<EOL>unmatched_file,<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>'<STR_LIT>',<EOL>]<EOL>library_writer.writerow(map(str, library_line))<EOL><DEDENT><DEDENT>
Writes sample and library information to a set of files for a given
        set of lanes.

        **BARCODE PARAMETERS FILES**: Store information regarding the sample
        index sequences, sample index names, and, optionally, the library name.
        These files are used by Picard's `CollectIlluminaBasecallingMetrics`
        and Picard's `ExtractIlluminaBarcodes`. The output tab-seperated files
        are formatted as:

            ``<directory>/barcode_params.<lane>.txt``

        **LIBRARY PARAMETERS FILES**: Store information regarding the sample
        index sequences, sample index names, and optionally sample library and
        descriptions. A path to the resulting demultiplexed BAM file is also
        stored which is used by Picard's `IlluminaBasecallsToSam`. The output
        tab-seperated files are formatted as:

            ``<directory>/library_params.<lane>.txt``

        The format of the BAM file output paths in the library parameter files
        are formatted as:

            ``<bam_prefix>/<Sample_Name>.<Sample_Library>/<Sample_Name>.<index><index2>.<lane>.bam``

        Two files will be written to ``directory`` for all ``lanes`` specified.
        If the path to ``directory`` does not exist, it will be created.

        Args:
            directory: File path to the directory to write the parameter files.
            bam_prefix: Where the demultiplexed BAMs should be written.
            lanes: The lanes to write basecalling parameters for.