This project's aim consists of a library called felisaparser to convert an Excel file to CSV file. It is based on the Pandas Library and it consists of a class made up by just one method: excel_to_csv(). This parser, unlike the Pandas Method, directly dumps the data into a CSV file, without the need of loading a DataFrame and occupy memory.
pip install felisaparser
>>> from felisaparser import parser
>>> parser('Filename.xlsx', ';').excel_to_csv()