* https://py-tutorial-de.readthedocs.io/de/python-3.3/interpreter.html?highlight=argv#ubergabe-von-argumenten und https://py-tutorial-de.readthedocs.io/de/python-3.3/stdlib.html?highlight=argv#argumente-in-der-befehlszeile
  * https://docs.python.org/3.4/library/sys.html#sys.argv
  * https://docs.python.org/3.4/tutorial/interpreter.html#argument-passing
  * http://www.python-kurs.eu/sys_modul.php
  * http://www.tutorialspoint.com/python/python_command_line_arguments.htm