def parse_csv_data(csv_filename:str) -> list:
    """
        Description:

            Function which opens a csv file and iterates through the file, adding each line to a list, which is returned.
            Each line in the list is seperated by commas like in the csv file.

        Arguments:

            csv_file_name {str} : is the string name of the csv file

        Returns:

            corona_data_list {list} : is a list of strings containing the covid data
    """
    # empty list which will be filled with every line from the csv
    corona_data_list = []
    corona_data =  open(csv_filename, 'r')

    # iterate through every line in the csv file and appends each line to corona_data_list
    for line in corona_data:
        line_data = line.strip()
        corona_data_list.append(line_data)
    corona_data.close()
    return corona_data_list