The Python library pandas can read Excel spreadsheets and convert them to a pandas.DataFrame with pandas.read_excel(file) command. Under the hood,
If possible, save as CSV from the spreadsheet application and then use pandas.read_csv(). IIRC, an 'ods' spreadsheet file actually is an XML file which also contains quite some formatting information. So, if it's about tabular data, extract this raw data first to an intermediate file (CSV, in this case), which you can then parse with other programs, such as Python/pandas.