def main():
terminal_command = sys.argv[1:]
terminal_parser = TerminalParser()
terminal_parser.add_argument('-i', '--input', default=[], nargs='+')
terminal_parser.add_argument('-o', '--output', default=[], nargs='+')
input_files = terminal_parser.get_list_of_input_files(terminal_command)
output_files = terminal_parser.get_list_of_output_files(terminal_command)
for file_name in input_files:
data_parser = DataParser(file_name)
file_extension = data_parser.extract_extension_from_filename()
print(file_extension)
