otld.append.append_1997_2009.get_relevant_columns

otld.append.append_1997_2009.get_relevant_columns(book: str, sheet: str) → list[str]

Select the relevant columns given a path and sheet

Args:

book (str): Excel workbook name. sheet (str): Excel worksheet name.

Returns:

list[str]: Returns a list of relevant columns. Returns None if all columns should be kept.